little pecker?

So I don't know about you guys, but I've encountered some different penises and I haven't exactly been on the "small or thin" side of town, but recently I started dating this guy and he is pretty head over heels for me but there's one problem...he's extremely thin penis wise and about 7.5 inches. I know I shouldn't let it bother me but it does. Should I give it a chance? I know physical chemistry is just as important as mental and I don't know if I can have that kind of chemistry with that size, regardless how much I have let myself like him.