Reading your post LadyMacbeth gave me one thought;
"I wonder if he even KNEW what he was looking for in this date?"
"if he said it was no big deal either he didn't know, or he already decided to leave and is letting you down gently."
That was my gut reaction.
I tend to think the advice given prior to this post is invaluable and I don't have concrete advice to add, so I'll leave it at that for now.
"Love As Thou Wilt"