While playing Arkham City, I got a message out of the blue. It was from someone I'd never met before. They found me through trueachievements.com because I'm on a Portal 2 boosting list. So anyway, they were after the Professor Portal achievement and luckily for them, I hadn't touched multiplayer yet. We ran through the calibration course, he gave me 1 of the 3 necessary hugs for Friends List With Benefits, and I got High Five for finishing it. He offered to play more courses with me, but my mind was still in Dark Knight mode, so I moseyed on back to Arkham City.
That didn't last long because a friend of mine hopped on and wanted to play Red Dead.