so there's this guy..

Hey gang... okay so maybe this isn't about sex and more about self confidence. I have always compared myself to everyone around me and I am with the BEST GUY EVER  he treats me so well but I  really insecure about my weight even though I'm thin (I know I hate it) but he's super skinny like no fat and a good physique and I'm just thin with some jelly rolls and we are starting to get intimate and I am scared he won't be attracted to my body. I have dealt with this for so long and I don't know what to do, any advice?