My husband and I have been married for 9 years. We have 3 beautiful children. We both work full time and are very busy. I have a very difficult time trusting anyone, due to experiencing and witnessing so much infidelity in my life. Throughout our marriage, I have caught my husband texting or FB chatting with various women friends and ex girlfriends. Sometimes these chats became inappropriate and what I guess you would call "sexting." He has always hidden this from me and lied to me about it at times. He denies that anything physical has ever happened and I have nothing to prove otherwise. I have always discovered these because I check his phone or email - usually when he's asleep and doesn't know I am. The last time it happened, I swore to him it would be the last and I would leave him. I recently discovered some more or less innocent chats with ex-girlfriends on facebook, and even an attempt to call one on the phone. He often complains to the other women about my not trusting him. Should I be upset, or should I let it go?