LondonFA:
If not including grey asexuality, then by the definition of psychological asexuality he does not by his description demonstrate sufficient trait to be defined as wholly asexual and under definition should not be categorized as such.
Understanding that psychological terminology is not always how terms relating to sexuality are used inmodern online parlance, I assume that you are implying that he may wish to explore the idea of being in the grey scale.
This isn't a bad thing, but again given his wish to have sexual relations and that he simply doesn't enjoy graphical pornography, I fail to see the evidence for your response. Please elaborate if you have time.
becomingoverweight:
I think of it as this. He feels he should want to have sex but has no sex drive. In order to live up to this expectation of himself, he wants to have sex. Not because he has a sex drive, but because he feels he's supposed to. I don't think that's sufficient to make him allosexual. He may be grey asexual though. It could be possible that he could develop a sex drive after having sex and definitively be allosexual. At that point he'd know what sex is like and if he'd want to experience it more.
"I also cant fantasize about sex and get turned on."
I missed this and I do see your point. It would be a good exercise for the OP to ask himself some questions and yes indeed, until the point of being of having had the option of real.life sexual experience and possibly executed that option, it is impossible to know as all other experiences can be thought of as a facsimile whether imagination or visual access to erotic stimuli.
