LoL. sfalexi does have a point but it all depends on a person. In my case, i used to have a gf whos like that. Shes sweet, pretty, lovable, basically everything a guy can ever want. But we broke up cause i couldnt stand her flirting insticts. Meaning that she has a tendency to flirt around though shes faithful to one guy. However, i found out that the flirting grew into something more and i couldnt take it and we broke up. Sad but true. In a nutshell, my x is different from yours so if you trust her, then a little flirting wont hurt. everyone flirts.
We all should look out for the finer things in life~