Wonder - Yeah, it's good to warn people. And if you meet someone online, meet them in real life quickly - there are definitely weirdos out there who will string you along online.
As for my Mr. Big Lots, I am reasonably sure he's not married or involved - but as a warning to others out there, some of his behaviors would be a warning flag to look for that - missing dates, coming over at odd hours etc. (He, it turns out, is just an overwhelmed slightly ADD doofus - but I am not lowering my antennae yet!)