Adventures in Romance (or lack thereof)

(note: this is an old story, I was just reminded of it and felt like writing about it now. Don't worry, I'm not holding out on any good gossip about my love life :)

The first meeting post-breakup is always awkward, especially when it was more of a tacit fadeout than a clean break. A week and a half before, he had hugged me goodbye, a clear sign that it was over. There have been no phone calls since.

I run into him in a hallway. This isn't completely unexpected. I don't feel that uncomfortable, as our interactions barely qualified as a relationship, if at all. There is no ill will on my side, at least. We make the standard remarks about the weather, the busy-ness of the week, etc. I'm about to excuse myself gracefully and get out of there when he says something rather unexpected. "So in a couple weeks, I was going to try to get a few people together and head out of town. Are you interested in coming?" My thoughts: A weekend trip?! WTF?! You just broke up with me! My response (rather automatic): "Sure, that sounds interesting." He smiles and says "Great. I'll let you know the details." And he walks away.

Now, we both know that he has absolutely zero intention of following through on this invitation. But I have no idea why he felt compelled to bring it up in the first place. Is it some half-hearted attempt to convince me that things are the same between us? Clearly they're not. But if that's his reasoning, why would he want to drag this situation out? It makes no sense to me. Is this a guy thing, one individual acting strangely, or am I the only one who thinks this is weird behavior? I find it all very odd. If anyone has any insight, please share.