Yep. It's creepy beyond belief. We had a few friends over for New Year. A mixed group, 8 of DH's uni friends (mostly male), a female friend we both know from school and FF's friend.
FF and one of DH's friends (I'll say Male Friend MF) had a bit of history and were really on/off all week, will they, won't they, kind of thing. OK fine.
Then one night another friend who is a total flirt got drunk and came on to FF. She was a bit drunk so kissed him back, but then said actually no, I like MF, I don't want to do this. All OK. He backed off. She didn't feel wronged or anything.
The next night, a third guy came and engineered a situation where he was alone in the room with FF. Started acting all creepy. Grabbed her hand and placed it by his head, just some sort of weird stuff that she didn't really know how to react to. She was really freaked out and made it clear with body language that she wasn't interested, but he didn't go so she hid in the toilet and then texted MF to come and rescue her. He did.
The thing was the way that the rest of the group reacted to hearing about this encounter. They all shrugged it off saying "He's harmless! He doesn't know how to chat up girls. He just sits in the corner with a pint!" Indeed, most of them seemed to find it funny, as in, lol, what a cock up he made of that!
I'm really convinced that he singled her out due to the fact she'd had encounters with two of the group and he had decided she must be "easy". I'm pretty shocked that everyone just seemed to think that was fine. I'm more shocked that having been told how creepily he behaved, they all laughed it off saying he's harmless because he doesn't know how to chat up girls 
Just left me - again - in the totally stark jarring realisation that women and men seem to inhabit two totally separate worlds a lot of the time.