<human>: Can you summarize the given text in a few sentences?

Every time me and my girlfriend have a tiny argument she runs to her friend on Facebook and bitches about me, she will make up loads of small lies to make me look like a completely horrible person which I'm not and she constantly does this with every little bicker we have. She said she will stop doing it after we had a serious talk but she is still doing this. I have to meet up with her friend sometimes when we all go out and it's so awkward, I don't know what else there is left to do. The last thing she told her friend was that she is getting really annoyed at me because I always talk about going to uni(she is already there) she then told her friend that I would either not go or I would drop out, It makes my heart sink hearing her say stuff like this when I am trying to get somewhere with my life.

We have been together for over two years now so would be a shame to end the relationship over something which seems so small to her but is a huge deal to me but I don't know what else I can do. Any suggestions please?

Her lies are petty in a sense but they really hurt me that her best friend thinks bad of me because of the lies her tell her. She tells her literally everything about our relationship but adds in little lies when she is annoyed with me she is like a third member, I've said to her if she has an issue to talk it out with me not go to her friend and make me look like stupid by adding her lies to it to make it completely unbiased.

I found this out by her leaving her facebook chat open about a week after our second chat about how much this hurts me I saw she had been doing the same before she quickly closed it.
<bot>: My girlfriend tells her friend everything about us, she knows more about our relationship then I do, whilst putting me down with lies