Yes. I once solicited a cocksucker who turned out to be a straight guy who was only interested in sucking me off. At first I didn’t believe him, but opted not to challenge him as bisexual because he made it clear there would be no hugging, kissing, etc. I figured it’s an individual thing. A guy can identify however they like.
He was handsome and over time I eventually developed a bit of a crush on him but was happy to enjoy him and his services any way I could in spite of that. He sure did know how to work me up and make me feel good! I visited him whenever I had a good load saved up for him and later followed him when he moved to a new place. I even met his girlfriend once by accident. He appreciated my skill in keeping our secret while talking to her and I did finally get a hug from him for that the next time I saw him.
I’ve since moved on and think about him and his wonderful, warm mouth often. He was always so polite and accommodating, making sure I was comfortable and properly taken care of without expectations. Each time I visited, we even sat and chatted afterward before I headed home. Such a great guy. I miss our encounters.