Should I break up with my girlfriend?

[anon]

What your describing is called Flip-Flapping. Shes unsure what she wants with her life. She wants you until she has you, then something peaks her interest comes along, and she heads the other way. Its a vicious cycle that unfortunately will continue until she grows out of it. I could be wrong here, but if she was really into you, she wouldnt be leaving you for other guys just to come right back again. You need to set her straight and tell her that she needs to figure out what she wants, because the next time she leaves you, you might not be there to take her back. The next time she leaves you, dont take her back right away, if at all. You deserve better then that and one day she will realize that the grass is only greener on the other side because its fertilized with BS.