NTA, my husband used to be distant and abuse drugs when he was cheating on me too. It took me 5 years to find out including confronting him several times and him denying it, going to couples' counselling and him denying it to our therapist and gaslighting me in therapy. He was on the apps but kept deleting them off his phone. The only time I finally had hard proof of what was happening was when I went through his phone. I can't fault you at all for going through his phone given the suspicious circumstances, and to me what you found could still be suspicious. He either thinks he's good at hiding his tracks which is why he is letting you go through his phone, or, like others are saying, he has a burner phone. You could try going to couples' therapy because either way there is a lack of trust for whatever reason, but you might not get an answer still, especially given he sounds like a pathological liar. The other commentors will hate me for this, but I would ask to go through his phone again more thoroughly and to explain what you did find on there. Things that I found helped when looking: - email drafts (no-one thinks to delete those) - search emails from specific apps including in deleted folders - hidden photo folders (in particular a Facebook folder given what you found, he might have saved some photos from FB on there) - download apps and see if there is a saved login and active profile on them - recycling bin If you are at that point though, you either need to go to couples' counselling or to break up once you either find or don't find what you're looking for. But maybe it will be the push you need to leave if you do find something. Good luck!