[Solved] Wife has changed, Facebook affair and wants me out

I have been married to a brilliant woman for 14 years and have 5 great kids. My wife changed completly in Feb from being lovely, caring and what i loved to being nasty, spiteful, lieing all the time and with no feelings what so ever. In feb i have messages saying she loved me then in March said she wants to split up. I found messages on her phone one evening that she had been chatting to a EX friend of mine and they declared love to each other on facebook. I confronted them both, she denied it and he apologised and said it was flirting only. Then i found out they met in a club two months later when she said she was out with the friends and chatted on facebook again with him stating that she should leave me and that she hates me, her replies not much better. (she had an alias account but used their real names and mine on the chat whilst cussing me)
Her friend has told her to check out social to see what she can get from me and suggested to she the womens abuse centre.
With all this she became verbally abusive and aggressive and actually hit me a couple of times but I didn't do anything about it as she was also going through that her father was dieing from cancer. I took it as you would ?
With all this going on and that she was fine in front of people but behind closed doors nasty. I still continue to take it as I want her still.
One night we got into a row and she hit me and i pushed her to stop her, she called the police and got me arrested saying that i assulted her crying but when she came of the phone just smiled at me, I said what are you doing !, she gave a statment saying that I was agressive and abusive (which is a complete lie) She retracted the statement but the police decided to prosecute and done me in court. She admitted she just wanted to get me into trouble. I also had a charactor witness to state i was not an abusive guy, and that was her brother.
I have since found out that she has slated me to people in the street, and has enrolled on a course for abused woman [censored].
She is off with the kids then really nice to them hig fiving and buying things, sometimes they don't want to be around her as she always shouts at them and she spends all her time with her mother or on her mobile phone, it never leaves her side and she is on facebook all the time.. Her mother is round every night, lunchtime, weekends without fail till late. She goes out saying she is going to her mums and appears early hours.
I have been to a councillor with the stress of all this, I think i am being set up as she told a neighbour she wants me out and wants the kids and thh house. She has not worked for the 14 years we have been married, always i have paid for everything and supported her and her parents at times. Now i am being taken out of the equation by them. What do i do ? I am keeping a diary and have pictures of the messages.