My wife and I play. We have a few characters each. We just decide on playing our high, mid or low characters. We both made female characters for our mid level characters. I just tell people she is my life partner.
I wanted to get our roomate to play also. She is our age and likes these types of games. However, her computer has some issue with COH and it won't work. So we all got Guild Wars. Unfortunately, my wife never got into that, so I split my play time between them on different games.