Cheating?

Hey ladies I need your help, I was looking through my bfs pictures on his phone and I found out that he took a pic of his dick for some reason. This happened while he was in the bathroom, do guys randomly take pics of their dicks or do you think theirs a reason? Do y’all mans do this I wouldn’t care of he jerks off in there I get it but taking a pic ? What do y’all think ??

Update

I did confront him and he said he just took it he did want to send it to me, but due to other cheating instances the only way I’d stay is if he deletes social media’s and have complete access to his phone which I do, he doesn’t like to send pics like that through messenger it was always through Snapchat that’s the only pic that was there but idk it’s hard to trust him at this point