Lemme tell you from experience, a recently divorced man is looking to get laid. They are NOT looking for a relationship, and that's a good thing. Who wants to be a rebound?

It's not so much about you having a chemistry with this guy, but you being confident in yourself. I suggest you don't fall into the trap that so many recently divorced people do, and that is have rebound sex in hopes of a relationship. I've been there. It's not about weight, it's about who really gives a damn.

Go out with him and see what happens. But don't expect anything. If he's only been divorced for two weeks, then he's lonely. And that is never a good reason to start something with someone (like you) that wants a real relationship.