Of course, I will get mad and sad. First, I will never let them know that they cheated on me but I will make sure that they will feel the same thing that they made me feel or even worst. I always try to be a good friend and as well as a good partner and I don't think I deserved to be cheated. Anyway, thanks God I didn't experience that and I wish that I will not be in that situation in the future. ^^