Here I go again

yep seems I keep coming back to this topic probably because it happens far more than it should.  So guy and girl, friends for years in SL, supposed  friends of family and such in rl, both married, both profess to love and adore their rl spouses and hrm, now they or at least one admits to loving  the sl guy as much as the rl one, what I wonder is do the RL counterparts know?  Do they actually know and understand that their  spouse has a "spouse" in a virtual world?
I mean Locke recently acquired a RL GF and as hard as it was to do I had to hit the departner button, why?  In my heart of hearts it is cheating, and  even though he was willing to remain partnered,  I just wouldn't feel right. So we remain friends we share a parcel of land and roos and call it good.
All I can say is at least I can live with myself.