<human>: Give me a shortened version of the text

My best friend (call her Kate) started a relationship 8 years ago with this guy (call him John) over Myspace. They had a constant on and off relationship because he constantly cheated on Kate with a few different girls. They never cut off communication with each other because whenever John would cheat on Kate and that fling wouldn't last he would run back to Kate and beg for forgiveness and she would forgive him.

Finally after their last break up when John cheated on Kate with his now current wife (call her Claire) John wanted to remain friends with Kate. For a few months while John and Claire were engaged they would hang out with Kate and everything was fine, until Claire was convinced Kate was trying to have an affair with John. Kate cut off all communication with John because she didn't want to deal with the ordeal and everything was fine, this was around Easter this past year.

Last week, Kate saw that Claire liked a mutual friends post on Instagram and decided to look at Claire's page, (which I think was a bad decision) and saw that Claire was passive aggressively spreading rumors about Kate saying she is a psycho ex b****. Kate ignored it, and just laughed at it, but mutual friends started sending screen shots to Kate of Claire slandering Kate more and more each time Kate would post something new to her own Instagram account, and eventually Claire started doing the same thing to me even though I have never spoke to her on any occasion.

Claire has also started showing up at the community college that Kate attends and is always everywhere Kate is, and Kate is afraid that Claire is watching her every move. That may be a fluke, but who knows.

I keep pressuring Kate to contact John and tell him about how Claire is treating her, but Kate is worried it would make things worse, so I guess Kate and I are wondering what Kate should do. Thanks for the help!
<bot>: My best friend and I are being slandered by her ex boyfriend's new wife on social media, and I was wondering if it would be a wise decision to contact her ex directly to stop it.