Hello, I hope all is well with you

I've been in my relationship for some time now. It's had a lot of ups and downs. The affection is great - passionate and intimate - except, there's one thing missing. The sex!! That is because I'm not comfortable having sex with him. At all. It's not something I want to do unless I feel pressured then I will become curious, though in hindsight these feelings are not right.

But my boyfriend really wants sex. Really, really, really wants sex.. I really don't. Not with him. But everything else is going well!! We work around not having sex and our alternatives are enough to keep us both satisfied.. But for how long?? I'm worried about the obvious. What would others Do?? I'm not at all sure what to do or what to think