Let me start off by saying i never used to care about this sort of thing.

Been seeing this person almost a year. The kind that says they dont care if you glance at their screen, but will turn their whole phone away to message someone back (or only check snapchat when we're not next to each other.)

Last night, he said he was going to pee. He took his phone, he went to the bathroom with the door open. There was no sounds of restroom activities, there was no sound of flushing the toilet. He comes back with his phone, i asked him suspiciously why he didnt flush. Says he forgot. I say i didnt even hear sound. He said "go check if you're so suspicious" which obviously made me feel stupid. 10 minutes later i have to go to the bathroom so i go. The toilet had been unused. There have been a few micro-happenings that on their own don't seem suspicious, but i'm very much at that point where i might just go thru the phone. Advice?