It's like invasion ofcthe body snatchers he's literally changed overnight. He is causing arguments, blaming me for everything and anything and refuses to accept responsibility. I have asked outright if he's having an affair, he denies and denies it despite being secretive with his phone. Spending all weekend glued to his laptop. What kind of man does this to his Wife and what kind of woman does this to another woman or is happy with such grubby sordid behaviour.