A while back I suspected my partner was cheating.
I noticed Changes in sex habits, going out more and earlier, phone always by his side, going in the bathroom with his phone and locking the door, msging someone whilst outside smoking and looking over his shoulder. I could see he was msging someone from the window, someone blonde.
I confronted him, I told him I was snooping and made the mistake of saying I found nothing, but am on to him.
His reaction was to put his head in his hands and then said he's never been intimate with anyone else.
I said I want to see his phone so he sat and tinkered with his phone before handing it over, of course I found nothing!
His reaction was odd, he looked gutted and said he was stressed from his new job and didn't notice he wasn't having sex with me.
Since he has blamed my mental health (I have depression and take meds for this)
and he has since picked an argument with me which resulted in him saying we are over we can see who we want now 
We "made up", in other words he got me to agree to show him more affection, he does this a lot!
But he knows I don't trust him now and is behaving, but I tried to snoop again and he has changed his facebook password.
This is after he said I can look when ever I like because he has nothing to hide apparently!
I am reading Why does he do that? Because I have suspected for a long time that is a narc and regularly criticises me and verbally abuses me.
I have decided I want to leave but can't yet, I'm starting a new job and will be heavily relying on him and need my car (which I will lose). I don't have family nearby.
My head's in such a mess! 