To be honest before MN I had never heard of the concept of emotional afairs. I do understand why they can be painful now, but I always used to think cheating involved actually doing something whether that be a kiss or something more.
What I would like to know is from both sides where that line is. People can be friends with people the same sex as their partner. But where does friendship start looking like something more to your partner and when does it cross that line to you?