I went to college with a kid like this. Fat chick was really into him and he felt bad not giving her a chance. Watched a bunch of fat porn to try to train himself to like it. Went out with her a bunch of times then cut her off. He told us he couldn't perform and rain out of her place.  Dude was a complete cuck though. He paid for a bunch of group meals because a fat bitch that was in the same student organization was there and would order double apps, entrees and desserts for herself and would insist we still split the bill evenly because "that's what adults do". So when we told her to fuck off and eat less he would freak out and pay for the entire dinner to avoid drama.