Thank you all for your concern. Finally I cried and cried whenever I think about it. During these few days, we talked about it and I asked him why. He said he did it for fun and he didnt think of the consequences. He also said he is sorry and beg me to give him a chance. I really couldnt believe it that he cheated on me even till now. How could he do such thing to me?! I trusted him so much. Right now, althou we are continuing our marriage life, I still just cant forget those images that I saw.