I found out (yes, I opened the skype icon on her laptop)that my long-time girlfriend (who recently has been pushing for marriage) has been skyping with her old boyfriend. She has not mentioned it to me, which leads me to believe she doesn't want me to know about it.
I foresee the arguments that 1) she just forgot to tell me about it because its so minor or 2) its none of my business because its just skype. But I just don't give them much merit because if you can see and talk to the person, the logical next step is to make plans to actually see them in person. Or even if not that, then at the very least it is using that former relationship as an emotional divestment from ours, which to me is cheating.
Can someone give me credible reasons whywhat she's doing is not a form of cheating?