He is insecure. His reactions to those pictures is only the beginning. it will get worse. Then finally, it will be you getting hit. Get out now. His reaction is a gift.
Because he is insecure.
Because he considers you as his property, and he doesn't like other people touching his things.<br />
Well, at least you found out he's crazy NOW instead of later. The earlier the better, now you can leave him...
Um, were you together with your current bf when these pictures were taken?