Save for later
How do you tell if someone is stalking you illegally? Simply lose your phone and all of your pictures and videos and wait for them to send something to you.
This guy was apparently saving photographs of this girl on his phone just so he could look at her whenever he wanted, and when she lost her own pictures, he completely revealed what he was doing. At the very least, she got some of her photos back, and hopefully, he got a restraining order against her.