Thank you Michelle!
Liz (It is Liz isn't it? I believe that is what is says on your sig),
I wouldn't give up yet. He gave you the best indication, he asked you to call him. You have to remember, guys really don't think of the phone and calling back as often as ladies. I'm not trying to say this in a bad way or anything, it's really just how it is...for the majority. BUT it doesn't mean they don't want to, trust me. Also, it sounds like he has been ultra busy. He may not be settling down at night until late and feels it might be too late to call. I would give him a few more days before you give up on him. And I know this is a lot easier said than done.
And like Jrsy Boy, if I wasn't married I'd call you back and you Michelle. But of course, then I would have to hide that from both of you. And then I would fall into the "Men suck" category.