[Gina]

Then you should tell him exactly how you feel, it doesn't matter if she is attractive, looks have nothing to do with anything. The issue here is that you are not comfortable with him doing something that is out of characater for him, <putting his arm around her> when he never did or does it to you. Don't beat around the bush, tell him that you don't like it...He may not even realize that he did it , or that it bothers you. As far as being jealous and parnoid, thats another issue. I have never been the jealous type .but if I was given a reason to be I don't think I would last with that person.