Lack of Sex Drive - HELP!!

Ok. So. To clear things up, i’m not exactly worried about my lack of sex drive, I’m fairly sure I touch on the asexual spectrum. Anyways. I guess right now I’m just nervous and anxious, as I’ve always been about being in a relationship.

I’ve never had a relationship, nor have I had sex. I’m both disgusted by sex, scared of it, and never really get turned on or feel pleasure from masturbating.

I just need some advice - please be honest

When I do get in a relationship, should I have sex with my partner even if I don’t really want it? Should I satisfy them sexually so they don’t cheat on me? I’ve heard stories of people who don’t have sex with their partners very often and that’s why their partner cheated on them, and, good golly I’m terrified... please help.