The Op ego is now totally crushed, she left the date last night thinking "I killed it, he wants me bad". Then she spend the rest of the night thinking of ways to let the poor love sick guy down easy. Now she wakes up to that e-mail and it's like WTH!!!! Now she has to reevaluate everything.
Now she wants to get another chance to make sure the guy is hooked before dumping him. It's all just a ego stroke to the OP, nothing more, she could care less about this guy.
He didn't get up on the wrong side of the bed; he's right on; I think the OP's ego was beat up and she wanted to be chased whether she wanted him or not.
karma is a bad thing to mess with.