I can't get over my own insecurities (iin?)
Okay, so my boyfriend and I have been together for over a year now, but we dated once before this and I broke up with him (I was very confused...) When I broke up with him, he slept with another girl. I've only ever had sex with my boyfriend, but he's a few years older than me and he's had sex with a small number of girls, but when we broke up he only had sex with that one other girl... and on a few occasion.
One night, when we were all at a party together a few months ago (my boyfriend and I WERE together at the time), she was in a room with my boyfriend, myself, and one of my boyfriend's guy friends, and I left the room to go greet someone who had showed up, and apparently in the time that I was gone, she drunkenly invited my boyfriend into bed with her, and he denied.
However, because of this, I've been immensely insecure since we've gotten back together. I've never felt his much hatred towards another girl before, she was even in my dream a couple nights. I get anxious on the way home late at night from work that I will drive up to my house and see her car in our driveway (I live with my boyfriend) and it scares me so much. I've even considered keying her car and I'm not a violent person.
Am I being overly insecure or is this normal? Is there anyway to look past it? I'm generally an accepting person, and I hate the fact that I can't get over this one little thing.