Come on now married guys we know you read the fun threads now time to tell us your stories?!
Mine is a little long and specific so bear with me. My situation was with a friend-of-a-friend. We were acquaintances/friends for almost 10 years before anything happened. He was a heavy guy that was practically a comedian, really comfortable with his own weight in a way that I had never seen before. We always hung out in a group and didn't get much one-on-one time, but he was often the life of the party. I knew he was gay and he knew I was straight so we never talked about anything sexual other than him finding out that I had an extra thick cock and him making casual jokes about that on rare occasion.
Years later I was on a trip to Chicago where they have some of the best food that wasn't anywhere near me. Portillo's, White Castle, deep dish pizza, etc. The problem is that I was 215 pounds and had this rule with myself that if I was over 200 I'd be in diet and exercise mode until I was back at my weight limit. I was skipping breakfast and all kinds of other unhealthy stuff that was messing with my system. I decided to say "screw it" and enjoy the vacation, then sent him a text telling him that I was probably going to get fat after my time in Chicago. I told a few other people as well, including my girlfriend at the time who told me that she secretly had a thing for fat guys and really wanted me to go for it.
A few months later I was at an event where this heavy gay friend was, but I hadn't seen him for years. He lost over 100 pounds and was a lot smaller than I was even though I was just a little chubby at the time. I found out that he lived about five minutes from my college, which was over an hour away from where I lived. He had one other roommate, but offered to let me spend the night when I had a night class and morning class so I wouldn't have to waste 2 hours worth of time and gas. This is when we shifted from acquaintances to really good friends because I would see him for 2-3 days a week and it was a really awesome arrangement and he became a great friend and buddy.
Within this time he told me that he was a "gainer" when he was younger and fat, but now he was a "feeder" for his roommate and they had this sort of gainer/feeder relationship going on for the past five years. This is why he was so interested in me being chubby. He started to cook me meals, get extra desserts and whatever else. I was crazy busy with my workload too so having tons of free food, convenient place to crash, and great company was too hard not to pass up. Even his roommate was cool, he was this huge gay guy but both of them were pretty normal acting so it just felt like a group of friends hanging out and nothing sexual was going on. After a few months I got fat too and then things started to change a little bit.
Everyone kept telling me I looked better as a "big" (fat) guy and I was having more success with women too, which was pretty strange and unexpected. I had different girlfriends come and go, but dating was getting harder and more rare once I was in grad school with less free time. The dry spells were killing me and I was more horny on average. My buddy started to offer to give me belly rubs when I would be over stuffed and told him I was too full to eat any more. At first I thought it was kind of a silly thing that fit his personality, but it actually felt really nice to have him massage my gut. It became common for him to see me without a shirt on so he could see how fat I was getting so even though him rubbing my belly probably sounds like a weird arrangement, it felt normal at the time and was just kind of our arrangement.
I wasn't really into the whole gainer lifestyle thing, but I was fine with being fat. My buddy would tell me that eating a lot might make me horny but that wasn't really doing it for me. Instead, I was horny more often because of lack of time to date. Eventually (now over 2 years from when this whole thing started) we got in a situation where I was turned on while he was rubbing my belly. He made some comments about noticing the bulge and how I was probably pretty thick down there there after all, but it was all in jest. I can't emphasize how slow and gradual this process was, we probably ended up in this situation maybe 4-5 other times before he asked if he could take my pants off. Rubbing the underside of my belly felt really nice, but my belt would scrape underneath and became a problem. Looking back it was obviously really naïve, but I felt like we were both just guys and who cares if he saw me naked so we got to the point where I'd be laying on a couch with no clothes on and getting my ballgut massaged by a buddy. I leak a lot of precum when I'm horny and this guy was such a genuine friend that he was doing his best to ignore it. It also became very aware to me that this guy was actually gay and staring at my cock, but I trusted him and we knew each other for so long. In that horny fog I was just aware of what he must have been thinking or wanting to do and that made the precum situation even worse. Once there was a puddle forming he couldn't really rub anymore and his hands were just covered in it. He got me a towel and was just kind of navigating around it, but I could tell he liked what was going on. After a while he would just scoop up a bit of it and eat it, which surprised me (it probably shouldn't have) but he asked if that was okay and I told him it was fine. That went on for a little while until I noticed him purposefully rubbing a little lower and lower until he hands would graze across my hardon. Eventually he just opened his mouth and started sucking, taking one remorseful moment to tell me he was sorry until he went back to just giving me a proper blow job.
I couldn't really be angry and obviously it felt good. I was probably erect for over half an hour before this happened so part of it was pleasure and the other was just relief. He told me later that he wanted to do that a lot sooner, but he was supposed to talk with his roommate (which I guess was more of a boyfriend) before playing around with someone like this. It worked out fine but he was really embarrassed at the time. I wasn't angry and I kind of felt like a big dummy for thinking this could have gone any other direction than it did. So I just let him suck me off, fed him my cum, and enjoyed the moment. It took us a while to talk and sort things out, I wanted him to understand that I was straight and he wanted me to know that he had his own relationship. It looked like it was going to be a one time thing, but next week we were right back at it again. It just kept happening until it was routine and expected and I have to admit that it was a golden arrangement. It was so easy to break up with girls that weren't worth my time and avoid getting into bad relationships in the first place because any time I needed an orgasm my buddy was ready and willing with no argument.
Then maybe a year or so after that was going on I met my wife long distance and the blow jobs had to stop. Credit to my buddy who was incredibly respectful the whole time. There was a lot of moving around out of state once I graduated and got married, but various life events brought me back temporarily. I was away for a year and got a job near the college so we started hanging out again.
Quick side note, I don't watch gay porn very often but when I did it was often married men getting blow jobs from a buddy. There was just always something about that dynamic that was appealing to me and I'm sure people in this thread can relate. Things were different now, I was the married man with the wedding band on my finger... and I had a gay buddy... and I knew that he wanted to suck me off. I read a lot of stuff on the topic online, including this very thread here that existed before I got married. Most of these married guys were always adamant that you never ever tell your wife under any circumstances, the whole down-low thing. But I didn't want to lie and hide, so I took the risk and actually told my wife that this was something I had done in the past. It wasn't a simple conversation, but she told me she was fine with it. Even now (roughly 4 years later) she tells me it sounds very Ancient Greek and just wants to be assured that I'm never going to get some other woman pregnant. Even with all of this in mind, I was hesitant about doing things with my buddy again. It felt like a big deal to be "one of those married guys" that did this sort of thing. I don't know why but it seemed like there was some huge difference between being a horny bachelor with a need and then actually being a married man that deliberately sought out this kind of thing.
Anyway, I couldn't just not be in state and in town again without seeing my buddy. We spent a lot of time catching up in person and he really wanted to rub my belly again. Almost the exact same scenario played out again with him wanting to rub a little lower, asking to take my pants off, and then apologizing while getting a mouth full. Part of me felt like I should have told him not to try it now that I'm married, but we both wanted it to happen again, so it went into things as a dumb hornball on purpose and got my cock sucked. I know none of this is typical, but my wife and his boyfriend were all fine with things, maybe because we were all honest about it from the beginning. We had dinner with them several times and the last time I was able to visit my buddy and his boyfriend got to meet our kids too. The only downside is that I was back in state for a year and then we had to move so I could start my doctoral program in yet another state. Now I'm living in Utah where my wife and I want to raise our family, but my buddy is still multiple states away where meeting him is a rare event.
I know a lot of people don't get how this works. I am happily married, I love my wife deeply, and she is very happy with her big bear of a husband. We have sex very regularly so it isn't like I want to seek out an affair or go cheat because I'm deprived and unfulfilled. Things with another guy are different, it isn't a romantic experience, but it feels like a kind of male bonding. It is hard to articulate or describe if you haven't been in this position before. What I can say for sure is that everything I'm saying here is authentic. I think a lot of guys don't share their stories because it is either too complicated or that they go into things with the intention of not thinking about it. They just want the convenient pleasure and it is more convenient to not have to bother trying to make sense of it. I'm just an over-thinker by nature and I like to know what is going on with my brain and decision making so there you go, a genuine married man's perspective on using a cocksucker.
My situation is probably far too niche to be replicated so maybe hearing about it isn't exactly useful to others. I haven't told this story in here (or anywhere) before because it is just too long and even this is the short-version. My buddy and I will probably never live in the same state again. We still keep in contact and I'm sure we'll see each other plenty of times in the future. I'd love to have something like that in my life again on a more regular basis, but things with him happened so gradually and naturally that it is hard to imagine. I guess we'll just have to see what the future holds.