One thing you can do about the size of your boyfriend’s man boobs is start hitting the gym with him. Without making him feel self conscious, invite him to take an aerobics class or a kick boxing class or a swimming class with you. If you can work exercise into your regular dating routine then your boyfriend will get the benefit of toning up his pectoral muscles regularly. In fact, give him enough compliments so that he’s encouraged to work on his chest by himself.
With exercise, especially exercise geared towards his pecs, as well as some dietary changes, your boyfriend has a good chance to work on his upper body with good results — for both of you! 🙂
As for having a small penis, everybody is different in what size, shape or style of usage works for them. I’m not sure that there’s much you can do about that. If your boyfriend feels that he wishes he was bigger, then he can certainly visit a medical doctor for advice. But if you’re the only one who’s not happy with his size, the ball’s in your court — so to speak.
Physical attraction is important, but as you yourself said, if this guy had an accident tomorrow and could never have sex with you again, you’d marry him in a second. If he’s that great, then you should consider working with what he’s got. Maybe this guy knows he’s too small to give you the kind of pleasure you crave, and has other ways to compensate! 😉
Let me know if those suggestions work out for you, and how things go for the two of you. 🙂