At first it was cute that he was jealous but it got old really quickly. He became like psycho-jealous-paranoid-monster. He was attending school in another state and I took a three hour flight to see him and because I am friendly by nature I started talking to my seatmate. We were having a nice conversation throughout the flight and kept talking as we went to the baggage pick-up area when I saw my boyfriend and waved the other guy good bye and as soon as we got into his car he pounced "did you get his phone number?" I was confused... who was he talking about? I was genuinely puzzled. I am like "who?" and he said "the guy you were talking to when I saw you" and the grilling went on like this until we got to his place. He just got more psycho until I dumped him.
After that, one of the first initial screening questions is about jealousy. I ask straight out "Are you the jealous type?" I am friendly to just about everybody so if the guy has jealousy issues, we wouldn't be a good fit. I have never cheated on a guy and like moon said, if I was interested in somebody else, I wouldn't be with him in the first place. It is really that simple.
The nut job comes across as a really nice, mellow easy-going guy until you get to know him better and then Whammo! From what I've last heard, he's practicing medicine in El Paso. If his patients only knew the paranoid-jealous nutjob underneath the white coat.

Still gives me chills everytime I think about him and very there are several states separating us.