This guy isn't one of those jerks, and I don't see him as the kind of guy that would just say stuff like that to make me jealous... Which is the issue, he's not normally the kind of guy that would do this kind of thing... His relationships are always long term, he really makes the effort, and then he does something like this... It's confusing...
Although, I really don't get the jealous part... Do you mean he was doing it to be mean or something like that?