Yesterday DH's phone was ringing whilst he was in the shower, so I decided to check who it was, it was his sister so I answered. After having a quick chat we hung up and his phone went back to the lock screen, he had some messages from an app called KIK and a few on whatsapp. All female names he had never mentioned before. So I decided to take a further look, I know I probably shouldn't have but i know his password and it was a bit of an in the moment decision. There were messages after messages to several women, some he had told he was single, other he had told them he was married but unhappy. Nothing innapropriate, just "friendly chats". He'd made me out to be some kind of monster and they were sympathetic towards him. Yet we've always had a good relationship, until now anyway. I don't even know what to say to him, how to talk to him about this