Initially,I will feel bad for being cheated but then I will forgive him or be cool only to be cautious the next time.But I will never boil with anger within myself. I will just let my emotions to let it go.
I say neither and just dump him/her.Regardless of the what you may decide to do,will that ever bring back the trust that was once there??
Kinda depends on whether it's business or pleasure. If they have any kind of intelligence and can appreciate what they've done, I'll ruin them any way I can.
Depends on the scenario. if the betrayal has hurt my near and dear ones i am not going to forgive that person in a hurry. else i may opt to ignore him.