Her life is a total lie...

Sometimes,being rude is the only way to get the point across to someone stubborn.You could try sitting her down for a talk,tell her how it is.It's good for friends to keep things real between each other,what kind of friend lies?Don't tell her what she wants to hear,tell her your true feelings about whatever she's lying about.

Tell her how its affecting not only you but the way others think about her.You can try being polite at first,but know that you may have to be rude,as in 'plan B' if she don't listen when your polite then that's the only way she's going to listen.

Just tell her the way that you typed it out now. Tell her that you don't want to be mean but it's impossible to tell when she is telling the truth because of her constant lying. Tell her that it doesn't make her any cooler and that people won't respect her better. Then tell her something nice about herself that way she doesn't feel like your ganging up on her bad attributes.

Hope that helped =]

I have a friend like that too... but unlike you I don't even know the truth. She's claimed rape and that she had sex with the same guy... it's annoying.

Just tell her she's just making herself look stupid. Cause anyone who would lie about sex is really pathetic.