For a while I'd run into a chick at the bar and every time we'd fuck. I guess it was kind of like having a fuck buddy. Her friend would call me occasionally and say "hey, you going out tonight?" If I said yes, this chick would always be there and I'd get laid.
Of course, that ended right about the time I found out she was still married and not divorced like she claimed.
There was another chick that we agreed in the beginning that we were friends with benifits, nothing more. That didn't work out very well. One week she'd say "let's just be friends, no benifits." I was cool with that. The next week she'd say she wanted the benifits back, so I was cool with that. Then the following week she wanted a serious relationship, and I was not cool with that.
That went on for about 3 months until she finally stopped coming around. She showed up one time unannounced (she lived ~2 hours away) and I was out all night. She had the nerve to get pissed at me when she found me the next day, asking where I was. I said, "there is no boyfriend-girlfriend relationship here, so don't give me that 'where were you' shit."
She had some issues.