What should i think? The guy i'm sleeping with likes me but isn't sure about us?

so i met this guy back in july this past summer, we've been talking off and on ever since. ive gone through 2 boyfriends since meeting him and ive always really liked him. when we first met he pretty much said that if i ever get in a relationship, not to talk about it, etc etc. every time i hear his voice or see him, im really excited but extremely bummed out at the same time because he doesn't want to try things with me. but with the chemistry that we have, it's so undeniable and it's driving me insane. we hookup, fool around, but i want more. we have the same mentality for the most part, we laugh for hours together, so what is stopping him from just slapping a stupid label on this situation so i feel more secure in the relationship? its really starting to eat at me because ive had serious boyfriends before and I've never felt for them, what i feel for this guy. and he's also amazing in bed, knows exactly what i like, which also makes it hard to be just friends. i really don't know what to do, we have talked about it on numerous occasions but he isn't willing to do anything serious and he knows how sad it makes me but he wants to continue this thing we have going...what do i do?