I've never had a sex drive..

Michaela • 31 years old. Mom of 3

Hey all. I'm 26 years old and have always had low/no sex drive. I've been with my fiance for almost 7 years and we have 2 young children together. My love is my best friend. I've always suffered from minor depression and anxiety and currently take citalopram for Ppd. (I'm not on BC) I didn't even start masturbating til I was 18 or 19. I have a history of bad relationship with someone who was very controlling, and for as long as I can remember I have never craved or really enjoyed sex. I never think about it, never need it. I feel miserable that I can't please him. The reason I am sharing this is, I think my low sex drive is taking a toll on my relationship, but I can't seem to get him to understand how this affects me. My fiance is aIways in the mood and I never am. I am afraid of him leaving me, I don't know what to do or what is wrong with me, and feel super alone with no one to talk to about it. Is anyone in the same boat as me? Thanks for reading