I had two girlfriends, one during college and one after, who were petite (5'2, 5'3) with D sized breasts. I never tried to date girls with particular physical attributes--say big breasts or a big butt--as I was more attracted to personality, but I guess I got lucky in the boob department! Especially as my friends would at times make comments about the size of their chests. "How do you handle those things!?!"
I'll never forget how their small frames made their breasts seem even more gigantic. Especially my college girlfriend who had huge breasts that were also perky which always amazed me. She clearly loved having big breasts and would often whip me in the face with them during sex, gagging me at times and would ask me to talk dirty specifically about her breasts, especially when I would refer to them as "too fat" and that my mouth could not handle them.
My later girlfriend had more pendulous breasts, which were sexy in their own way. And when she went through a period where she put on weight they became double D in size. I remember she would often indicate to me she wanted to have sex by wearing a tight shirt with no bra around the apartment and when she caught me noticing would say, "I have really big boobies you know", with a smile. I distinctly remember she liked to get her nipples hard and then would hover above me and drag them along the length of my cock often pressing them into the head of my cock. A complete tease!
While I tried tit-fucking once or twice with these big breasted partners it was never really our thing to be honest. Oddly enough it was with a later girlfriend, sized B cup, who really enjoyed tit-fucking me and made me come to love it. She said she loved the feeling of cum spraying on her breasts and would often ask me to not ejaculate for weeks to be able to have a big load for her breasts. so great how a woman does not need to have big breasts to make for a hot tit-fuck!