Hmm Alrik, I seem to remember some philosopher saying that once "what is Truth?" and so far no one has had a logical answer for that.
Tsel, if I dig deep down, I would say I would be very upset, to find my significant other in bed with someone beside me.
Never mind the fact that I would/ could/ had done it too, that only throws the whole ugly thing back in my face and considering that I probably already felt guilty about doing it myself, this would only mean that the partner, who was still "the Home" and a stable rock to rely on, became as bad as I was.
Conclusion: Yes I would be very upset.
Mea Culpa's Demesne
Note; artwork for Avatar courtesy of NWN and CEP
Old Elven Saying:
"Never say Never if you're gonna live forever!!!"
"I didn't do it, it wasn't my fault"