One friend (who has herpes) split from her Husband and for the past TWO YEARS has been having an affair with a married man who she used to work with. He's promised to leave his Wife and 2 (uni aged) kids and move in with her for the past 18+ months but has always had an excuse:
'I can't leave, my daughter is just about to go to Uni'
'I can't leave, My mother is dying and I don't want her last thoughts to be sad ones'
His bag has 'apparently' been packed twice and both times he 'bottled it' as apparently one of his daughters came in and needed help with something.
His wife found a love letter in his bag from my friend and he admitted the affair, said it was over and that was that - his wife apparently is fine with his apology and wants their marriage to work 
. My friend now believes that as his Mother has just died, he'll leave his wife for her before Christmas - and doesn't believe he's a cheating scummy liar and she should stop the affair and find someone who is single.
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Another friend is a bit of a stalker when it comes to men - She was talking to a guy on a dating site, it transpired that he lived in a block of flats that was overlooked by our offices. After a week of talking he said he liked her but had a big project at work which meant loads of late nights so could he possibly give her a shout next week and work out where to meet for a first date?
She accused him of being a 'liar' as 'by the angle of the light in the photos he had sent her' and the 'images she could see out of the window in the photographs' she had apparently worked out what flat he was in and had been watching when the light went on at 5pm - this meant he was a liar as he said he was working late.
She didn't think he might live with a flat mate, might be working from home, might have a cleaner... nope, he was a liar. After she accused him, he said 'You're nice but a bit crazy, goodbye' and blocked her on the dating site - unfortunately had made the mistake of telling her his surname and where he worked. She worked out his work email address and emailed him about 10 long paragraphs of her 'thoughts and feelings' on why he blocked her.... 
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Stalker friend (above) also likes 'getting revenge' on people she views has slighted her. She used to work in a company and have a boss who kept changing his mind. She asked his opinion on something and he said 'Why are you asking me? Surely you're capable of doing it yourself?' so she went away believing that she was given permission to undertake a certain work responsibility on her own.
The next time the same thing cropped up - she did it herself - to which her Boss went nuts at her saying 'Why have you done this? You should have asked me!' Which to be fair, is very irritating and bad management.
Rather than speak to him about it - She decided to get 'revenge' and found him on Facebook, stole all his profile photos and created a fake dating profile (he was apparently single) but made it all dodgy 'I like golden showers and latex' type thing. She then spread the rumour at work that he was a total pervert to the office gossip and before the day was out, people were sniggering at him.
I told her that this was not only illegal, it wasn't exactly fair as a lot of people in life are arseholes and that has totally crossed the boundary of what's acceptable - however she disagreed and said that he deserved it. I suggested to her that it could easily be tracked back to her, but she just didn't seem to 'get it' so I gave up at that point.....