Tricky Situation (Quick Advice Needed)

Basically, I'm in a tricky tricky tricky situation. A girl I've been dating for 9 months has suddenly gone CRAZY. We broke up exactly 3 weeks ago today but we got back together last night.

Throughout the 3 weeks it's been CRAZY. She's been flirting with guys left, right & centre, posting up pictures of male models & saying 'this is my husband', clubbing every night virtually, texting guys like crazy & even going to the extent of uploading pictures of her & her ex & saying 'best holiday ever!' & etc. Basically doing everything that could possibly be disrespectful to me in anyway.

I started to move on by Freezing Her Out & she couldn't handle that. She didn't want us to get back together but she didn't want me to move on.

EXAMPLE: She stayed at mine on Friday. She had a guy texting her at 1AM repeatedly. I asked who it was & she replied 'no one, no one. It's not like I'm responding.' However, the minute I leave the room she's going through my cell phone & asking me who this is, that is & she throws a fit when I talk to girls in general & get's all jealous but she's allowed to flaunt herself in every way possible.

& before things went bad, she use to give me real interesting & LONG responses, full of conversation, full of dedication to the relationship. She was perfect! Now it's just no more than 3 words responses & the conversation will die if I don't keep it going. I'm just bemused by the whole thing. To make it worse she doesn't want us to be friends on Facebook or Twitter as apparently 'I'm yours' in her words but we're in a 'relationship'.

Even though we got back together last night I don't know how to deal with this situation.

All advice would be appreciated.

I very well know this is in no way a quick response, but hopefully it will surfice for now.

I have two questions, were as the your answer would provide my answer

1) why did you two break up in the first place?
2) wtf(sorry) would you get back together with her(crazy @$$)?

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