Apparantly these are becoming more and more common particulary with colleagues due to long working hours etc. It is where you have an emotional but not physical relationship with someone which goes beyond harmless flirting. Can be spending a lot of time with someone, calling them or texting them out of work, hiding it from your partner etc.
They can be just as destructive as physical affairs, the feelings of betrayal and hurt on discovery can be just as bad. I just wondered how many of you had experienced them and how you had dealt with it or whether you don't really think it's a big deal if it's not physical.
(am regular btw)