Ladies and gents, do you think its a bigger betrayal when women cheat than when guys cheat?

Hard to say.... I'll go from two seperate areas. I would say (as far as Biology is concerned) women are hard wired to seek "connectedness" both with other women and with their significant other (PC man or woman.) Their speech centers are located in the part of the brain that regulates emotion (which makes them more willing to "open up" in that area) and their bodies actually produce a hormone called oxytocin which "binds" them to their mates and offspring. So when a woman cheats (and especially after she's had ) it could be inferred that's she is "betraying" her Biology. On the other hand, a woman (usually) invests more emotionally and otherwise in a relationship (A "duh" statement (see above-) it has an evolutionary basis as well.) and when a guy strays it is more emotionally taxing on a woman. (Their are exceptions to this of course, but generally speaking it holds.) So in that sense a guy is the "betrayer" of a woman's time/affections etc. It's all in how you choose to see it. If one person feels that he/she has invested more than another in a mutual relationship than the person who has invested more will naturally feel more "betrayed" if it ends suddenly without closure. If there is a feeling of equality then either both will be somewhat hurt or have a mutual apathy towards each other.