More then a booty call...am I stupid?!

Where to start about...well, I'll call him Jedi (I literally can't think of anything else to call him)?  We went an a date and slept together that same night ONE YEAR AGO.  Since that time, we've met up once or twice a month, with just a couple dates here and there that happened more when we first began seeing one another.  Its a convenient relationship I guess; he'll call when he wants some booty, but basically nothing more after that.  Now, I'm in NO sort of darkness when it comes to booty calls...I know that is what we are now, period.  We do not talk outside of arranging a meeting time, and our conversation is very limited before and after the hook up.  Of course, there's been times where we've had convos outside of sex, but that doesn't happen very often, and as soon as the deed is done, we roll over to our sides of the bed and fall right to sleep.  I'm not fooling myself, I'm not ignorant about the exchange here, but I AM beginning to want more.  I feel just fine not talking in the time between our trysts, but I've begun to notice that I really do miss him after our meetings.  It now feels, to me at least, as if we're connecting more when we are with each other like thedynamics are changing. I just can't stand that I can no longer disconnect when we're done, and I'm left just thinking about him constantly when we leave each other.  So now, this is where I am...its been and effing year-WAY too long I think for something like this to continue.  I assume that at this point he has SOME kind of feelings for me, or that he's content with knowing I'll hang around for a while without asking for more.   Two weeks after we hooked up, I simply said I liked him...he responded that he didn't want anything serious; this really deturs me from saying something again, but I feel like I have to.  I figure I'll either get hurt from the rejection of him telling me no, or that I'll get hurt from letting this go on for another year without speaking up.  I want more, but when, and better yet how, do I say it?  We hardly talk as it is, so I feel like I'll look like a total idiot sending him a text or calling him saying "uh, I really like you, but, uh, I want to be something more serious, uh.." but I can't just ignore him because we hardly ever talk...I will say tho that the 1 occasion that I legitimately couldn't return his text messages, he blew my phone up which I thought was a total surprise.  Anyway...I know I need to take the initiative and ask him, but how?  When?  Dear Lord, this is going to drive me insane.