A Month Or So Ago

Let's go back a month or so ago.  The guy I ran into at the airport texted me, a lot.  He's asked me out to lunch and we went.  He's a nice guy who I see at work every now and then.  I don't consider himself to be a long term prospect because he just got out of a serious relationship, has some young kids/baby mama drama from a different woman, and I'm not sure I find him attractive.  I don't find him unattractive, but that's not a great vote of confidence.  If anything, he'll be a work friend?  I wouldn't mind being his work friend, but from that lunch we had together, it seems like he's interested in more.