I am both asexual and hypersexual, due to having been molested as a child for quite a long period of time and find intimacy to be rather weird. My husband is a very touchy, touchy man and many times I have to sort of pretend to playfully pull away and other times, find myself almost throwing his hands off me, as though they are an irritant. I actually hate to be touched and even kissing can turn me cold and I am afraid that I have wiped my mouth, when he has not looked!
Only truly discovered all this during my marriage, otherwise, I would not have gone through with it.
He says that I miss out on so much, but I actually do not feel that way at all. I do not think about whether I want to be touched or to touch; it is just that I do not like being touched and find it weird to touch another! I derive no pleasure from touching my husband's body, but I know that is not because of him, as I was once, deeply in love with a guy and we went out for nearly 3 year's and I felt exactly the same way. Lol he loved his back massaged ( boyfriend), by me, but it turned me cold and the only way I could do it, was using oils.
Touching skin is very strange to me and I do not enjoy deep intimacy; I, in truth, perform because it is fair to my husband; it is not his fault that he loves sex, so why deprive him?
But in your situation, you ought to be fair to this young man and end it with him, for he has as much right as you, to want to be intimate.
Bizarredly I find watching sex to be more exciting to be in on it, but really I suspect that is due to the abuse!