Demi-sexual question?

So I ID as demi because I rarely feel sexual attraction, and only feel it towards people I have a strong romantic or platonic bond with. But I'm also incapable of enjoying sexual activity with someone I haven't experienced that attraction too. Like, at all. I could be dating someone for weeks but until we have that connection, or if we don't end up with it at all, I just don't respond physically. Like my brain could be all "he's cute, you like him, let him kiss you" but to my body it's contact as nonsexual as a handshake. Which I find really odd because it's very frustrating when mentally, I'm "in the zone" but my body won't cooperate.

I was just wondering if any other acespec people have experienced this, or if there's a special name for it?