Am I a booty call?

So, I just want clarification/ other women's opinion on the following issue: this guy I have been... Sleeping with (we've known each other since high school and are both in our early 20s), tells me that our current arrangement isn't "just" sex to him and that I mean more to him than "just a piece of ass" and he doesn't want to sleep around anymore. HOWEVER, though I am the only one (that I know of) that he is sleeping with, he says he is not ready for a relationship. So, am I merely a booty call? If so, I need clarification because I'm no ones booty call or second option.