Small Penis Help !!

Ami
So the last guy I've been with was a few months ago he was just a fuck buddy but it was the best sex of my life hands down. Recently I met this guy & he's litteralty perfect , treats me so right and is so sweet he looks at me like I'm the only girl in the world. Now I know I don't like him as much as me and I think it's because he has a small penis! The sex sucked ! I couldn't stay wet or even get wet like that , there's just nothing sexual there for me. Idk what to do I feel like that's a big part of a relationship but he's litteralty everything I could ask for. And I don't believe in cheating .. What would you guys do ???? Help please