My best friends all take relationships very seriously. We study what God's word says about how to treat our women and all want to be better husbands and boyfriends. Infidelity is heartbreaking and your sister has my sympathy. I'm very sorry for your pain. You have my promise that I would never do that to you. I can't even think about other women. You are all I want. I have eyes only for you. Cheating makes me so mad.