My [18F] Boyfriend [18M] packs a small package

I'm in need of some help... My boyfriend has the world's smallest penis ever. It's micro. It's about an inch hard. I love him to bits, he's sweet, caring, gentle, respectful and good with his hands. I sometimes feel so bad for caring about this because I feel dirty. We have not yet slept together, but we do have intimate moments. His penis is so small I'm afraid it will not be able to please me. He's the man for me, he's my soulmate, but this is kind of a big deal for the long run.

I've thought about leaving for someone with a normal penis, but he's the one. What do I do? Is there a possible solution to this problem? I do not want to sleep with anybody else, but I've caught myself fantasizing about cheating in the future. I feel so shallow and like a bad person.

[[EDIT]] As some of you suggested, I talked with my boyfriend. I expressed my concerns and told him that in no way am I less attracted to him. He took it well, laughed, and said he "can't wait to prove me wrong" He told me he has something called phymosis, and that he'll undergo surgery in the future. He's 100% open for toys. Then he said "I already please you with just my hands, imagine what else is in store for us" this lifts a grand weight off my shoulders and I don't feel as bad of a person for thinking these things. He's the best. I wouldn't change him for the world.

TLDR: My boyfriend has a micro penis and I feel guilty for thinking about leaving over just that.