Am I overacting to a solicitation my husband made for casual by responding to a Craigslist post?

Yep, he's a Craigslist dog. There is NO telling where he's been and WHO he has done. If he went through that much trouble to write it, I'm sure he has acted on it. It's just too easy these days. Next time you kiss him, think about where those lips have been, and his wiener up inside some nasty he met on craigslist. Nice guy, sounds like a guy to die for. Don't let this one get away!