New boy toy ☺️ . . PLOT TWIST

So I just started talking to a new guy a little over a week ago and we immediately hit it off. We've stayed up late nights talking for the past few days and the sexual tension between is pretty intense , I know it seems waaay too early right ?! We haven't had sex . . . and we probably never will after tonight. He's been really eager to do it a little more eager than me but I was considering giving it up until I went through his phone 🤕 apparently he has a girlfriend. I feel pretty bad for snooping but I'm also hurt that he's been lying to me or not telling me the full truth. . . of course he's been feeding me these cute little romantic lies about how he feels about me. I want to address it but I know I'll look like the bad guy for snooping. I've been open with him this whole time he's gone through my phone before as well but of course didn't find anything surprising. He's the only guy I talk to at this time he's had my full attention.

Should I address it ? If yes, how ? If no, why not ?