Recently I have become bothered by a friend of mine acting overly friendly to my boyfriend. Really she's overly flirty with alot of guys so this shouldnt bother me but theres a history to this...

A few years ago I had a boyfriend who completely broke my heart. While I was going out with him this friend erica, had gotten to be friends with him as she likes to do, so when my boyfriend broke up with me, I had to spend the next month or so listening to my friend talk about how 'awesome' she thought my ex was and how much fun he was to hang out with and blah blah blah. It was hurtful. I felt betrayed that my friend would act like this.

A few months later me and a guy friend, craig, who was friends with both me and erica started having a thing. I told him I wasnt yet sure if I wanted anything to happen because I didnt want to ruin our friendship and he got really upset. Later that night I was out with friends and they all said that they thought this guy craig was going to have sex with erica and obviously I got very upset. I said "why would craig do that to me?' and my friends said 'cause he feels rejected' and I said "why would erica do that to me?" and they said "cause its erica..." nothing ended up happening that night, but me and craig never ended up dating anyways, and down the road him and erica ended up in a serious relationship.

Which brings me to now, and she acts very friendly with my boyfriend now and it makes me insanely nervous, and a little jealous. Part of me knows im being stupid, but based on the past I just cant accept it. I know my boyfriend would never cheat on me, and I doubt he'd leave me for her in any situation but...I dont know I dont feel comfortable. I feel ilke what if me and my bf broke up and then i'd have to deal with erica getting all cozy with him like she did with my ex. Its a what if, but its a big 'what if' to me.

I've already told my boyfriend partly that it bugs me and I todl him it felt like he flirted back with her sometimes (i understand he is just a man and im not really upset with him), and I told him that it upsets me. He apologized and basically reasured me that I would never have to worry about it etc. Etc. Then I felt dumb for making a big deal out of it.

Anyways her birthday is coming up so we'll be seeing her then, and im just worried that im gonna get all upset or anxious again if she starts flirting with him. I dont know how to avoid this. Should I be telling my bf the whole story and hope that he just avoids her? Some of you might say that I should talk to her about this, but she's kind of self righeous and will just shrug it off or do it just to annoy me, I just dont see her taking me seriously - we're not that close of friends.

Should ijust try to get over it and hope that she can honor a friendship this time? I honestly dont know what to do and the more I try to not think about it the more I get anxiety about it.