That's the nature of twitter, texting, chat rooms or whatever. It's ephemeral, of the moment and then we move on. I wouldn't think too much of it. Yours just lasted a bit longer than most. He had fun , you had fun. He doesn't sound too bad. Maybe it will ignite again and maybe next time something more will come of it. Use your intuition ( use the FORCE Luke haha), stay smart , don't do anything you don't like doing and don't try and over analyse things. He might be a really nice guy. We all like flirting. It's the spice of life. And it's free.