A girl who was one of my best friends led one of my dude friends on for a few years, then rejected him when he tried to move on to something serious. This led to no end of me having to listen to his miseries for a few years. Even after rejection, I endured a few years more because he thought she was actually into him. Of course, when I tried asking her if she was leading him on, she said 'no'. This led to a rift between me and my best friend, because I thought he was being too whiny and delusional for his own good.
And then a few years later I find out that all the while, even post rejection she still got frisky with him. Sans clothes. And this was while she was dating one of my other best friends. And when the first guy got a new girlfriend, she got pissy about it. Frankly, she got pissy whenever ANY of us got interested in anyone else. It was like she wanted us all to herself.
Technically I'm not the victim in this story. But wow she was one messed up ***** with attention-seeking issues. I considered her a friend up to the point where I found out that she was leading on my best friends even when she knew they had feelings for her.