I agree with everyone else but I went through the same thing. Never wanted to have sex or masturbate and it wasn’t until I was single that I realized I just didn’t want to have sex with my boyfriend at the time. He didn’t make me feel desired, he didn’t put in effort into turning me on, and I just didn’t want to have sex with him. But during I would lie to myself and wonder why I never wanted to have sex with him. So I would encourage you to maybe do some thinking into the situation.