MSN.com, Match.com, HappenMagazine.com: they’re in a healthy and satisfying 3-way relationship. This Ask Lynn column is being promoted at Match on Yahoo this week…

This week we have the flipside of last week’s letter: Brian is dating a woman he met online and hasn’t taken his profile down — and now he’s being accused of cheating with another online dater…

Although I never asked Rita for a date or even for her phone number, I did talk with her about life, my personality and what I want in a relationship, etc. Now I find out that both of them are friends — and that I’m in the doghouse.

So, is he cheating? Should his girlfriend be concerned? Check out the full letter and advice, then add your two cents below!