Hi this looks like a great forum, thanks for everything in advance.
My problem is that I feel threatened by any male that comes into contact with my girlfriend. If I think, or my perception is that she is attracted to him my behaviour changes and it creates uncomfortable situations and stress between us. I withdraw and sulk, hoping she will reassure me. If she doesn't reassure me, I project on to her and blame her for flirting, or quietly live with it until it goes away.
I am aware of the events in my life that have led me to do this, and I'm tired of feeling this way, it's such a waste of time and energy.