<human>: Can you give me a shortened version of the text?

So our relationship started out fine first 5 or 6 months I never got jealous pretty much ever. Shes a flirty girl but im a flirty guy as well, but I feel like when girls flirt with guys it leads them on more than vice versa idk. Ever since the last 4 months though, I get jealous, not too bad but I always have these bad thoughts of her meeting an attractive guy at work and them getting along and her thinking that they would just be friends and next thing she cheats or something, guys ask her to go to parties all the time she hasn't gone yet but I feel like if the opportunity keeps knocking.....Something might happen. In past relationships shes cheated but she constantly reassures me she would never do it especially after what happened to me before, But words are words and not actions. 
    In other words I don't know how to get past my insecurities I trust her but I feel like she would get lured in and put herself in a situation that might do harm. Even though she's a very loving girl and the best girl i've ever dated I don't know how to shake these thoughts, so any kind of help other than "go see a counselor" would be very much obliged.
<bot>: Can't get over my insecurities even though gf is great I constantly think she's going to meet a guy she's attracted to and end up doing something. How do I get over this.