Name changed for this as I'm posting on behalf of a friend.
She found a video of her partner, self filmed, having a wank and it looked like he was performing for the camera. Face and body in the shot. Including errr finishing on camera.
She was looking for something innocent on the phone, a holiday picture or something I think.
She now thinks he must be having an affair or cheating. She doesn't want to tell anyone else as she's mortified and hasn't mentioned it to him yet either.
Would you assume this is suspicious and means he's up to something - could there be any other reason he'd make something like this?