The talk: what are we?

How do I bring this up to this guy I've been talking to casually for longer than two months? We went on one date and I just need to know where we stand because I've been loyal to him and don't want to be wasting my time. I don't feel like I'm in a relationship and feel like I'm single but committed to someone who I may not even be with.

How do I bring this up without seeming like I'm interrogating or attacking him?