I have a bit of a funny story. A few years ago I was at a friend's outdoor party - let's call my friend Jill, and let's call her boyfriend Jack. Halfway through the party this random girl introduced herself to me - let's call her Miley. I assumed that she was Jack's friend. Afterwards she added me on Facebook, and one day we were chatting online when she admitted that she had a crush on me at that party. But she also said that she already had a boyfriend and wasn't really expecting to take this anywhere. Ok, weird.
I asked Jill about her, and Jill said that she had assumed that Miley was a friend of one of Jack's guy friends. Fair enough. So then I asked Jack about Miley, and he said that he didn't know her, and none of his friends knew her either. He had assumed that she was Jill's friend. In other words, nobody knew who Miley was. She just randomly crashed the party, presumably to meet me because she found me attractive, but she wasn't actually interested in me.
Also, when I expressed concern over her public comments on my Facebook pictures about me being "yummy" when she had a boyfriend, her response was "Just because you've already bought something doesn't mean you can't go window shopping." LOL. Would you like to try it on in the dressing room too?
Jill, Jack, and Miley are not their real names, obviously.