My sister was telling me about how when she and her husband first met, she found out he had been continuing to talk to girls he met on a dating site, and that he was sending flirty messages to a girl who had liked him and who he had liked. This girl even had called my sister ugly and all my brother in law said was "lol." He also said literally "I told you more about how my exes treated me badly than I told (insert my sister's name). ;)" he also hid his phone and locked her out of his Facebook, and it was when she demanded entry to his Facebook that he finally let her in. She didn't find any sexual messages, but it was clear to me he was more emotionally involved with this girl than he was with my sister. He also never buys her flowers or gets her presents for holidays, etc. She feels hurt but she doesn't know what to think. What do you think of this situation? My heart is breaking for her but I don't want to say anything offensive about her husband because she does love him and I don't want to cause drama/issues.