Why doesn't he seem to want me sexually?

So there's this guy that I've known for a few years, to make a very long story short I'm 99% sure he likes me. He hasn't and probably won't admit to this :( His actions scream that he likes me but he always says "I don't like you" blah blah basically just talking to talk. So my question is, I don't completely throw myself at him but I make it kinda obvious that I like him (especially physically). So my question is when I'm trying to touch him or talk casually with him about sexual topics he kinda brushes me off? So I think there are 3 scenarios:

-He likes me but is scared to be with me

-He actually doesn't like me (I'm 99% sure this one isn't true)

-He doesn't want me to just throw myself at him, but does like me back

So which one is it? We have fooled around once (no sex just oral) and we semi cuddled but not really for a movie night (we were constantly touching the whole time in some way or form). It's like he doesn't want to get sexual with me... I am a virgin and he said he doesn't want to take a girl's virginity (which I respect) so could he be avoiding sexual stuff because he doesn't want to be tempted with me then not be able to go all the way with me? We are both in our early 20s.