My girlfriend flirts yet she wouldn't let me be. What do I do?

Hey dude, realise the girl is using you. Best thing is to use her too. Play around on her. Don't hide it. Girls always want what other girls have, that way being seen with her makes you more attractive and other girls will want you more. When you "let them" steal you from her this will hurt her and make them happy. Ha ha.
Don't think she'll change, tears are a womans best weapon (possibly more than sex).
Truth is she won't like you treating her like this so why should you put up with it from her.
Using her is the only way to escape with your dignity and maybe some new girls 

dear jonnhy consider what SAMORAJ said its  simple u can't make a whore a house wise, get ur own share of the cake and clean mouth my guy miss right will surly come one day remaing OG mean (original gangstar) thats what i am, i have esperience this also

Sorry about that,

The initial post was done without reading ur story.I feel a bit sorry for you & the girl and a second chance i guess(Personal Opinion) might be worth looking into.

Nevertheless, it might be a great risk, so take all necesary protective measures(Physical,Spiritual,Sexual,Intellectual, ) .

good Luck.

too bad