I met a couple nice people online, but way more crazies...
One was married, using online dating to cheat on her husband, because he cheated on her. I passed.
On was living with and still dating her boyfriend, and she literally told me she was looking for an "upgrade." I asked her how long we would date before she needed another upgrade. She was beautiful, but a total train wreck.
One was still living with her ex, who would get drunk and beat her up. I got her tell her family what was going on. I decided against a second date though.
On a first date, I was told we could have sex that night, but only if I agreed we were dating exclusively. This was after she told me she couldn't handle rejection and cried