There is this guy that I'm seeing, and have been seeing for a while, and I've been wanting to clarify our relationship but I cant figure it out. 

He tells me that he refers to me as his girlfriend even to his brother, but that he wants to just say we're only dating. The distinction is that dating is NOT exclusive.. He told me "You can be my girlfriend in a month." But then he followed that right after, with "Or do you want to be my girlfriend now?" and when I told him that he could decide he just said that he wanted to stay dating for now. I'm almost absolutely positive that he's not seeing anyone else, and I know for sure that he's really really into me. 

Confusion. Whats happening guys?