He may spend a lot of private time on his computer, his phone or at work. Working long hours could be a cover for compulsive viewing of internet porn. When you notice your partner is on the computer, he may turn it off or sex and love addict to another page.
He may set up secret or hidden email accounts. He also may hide his cell phone to avoid your detection of his phone calls or text messages. In general, his demeanor may change. You may notice that he’s acting differently. He may become more secretive, private, unreliable, critical or irritable.