Umm...this reeks of a bunch of awkwardsauce. So some 49-year-old creepy security guard that used to work on the Warner Bros lot where Pretty Little Liars is filmed was convinced that he and Ashley Benson were in love, and it was God's will that was making it happen.
Apparently she randomly looked at him one time, and that was his sign. Plus he was also convinced that her and other stars on the lot were communicating with him through silent messages.
...I'm pretty sure they make pills for stuff like that. Either way, she got a restraining order on the dude and he has to stay 100 yards away from her, even though she's still convinced he's going to try and track her down at home.
So...she needs a security guard to protect her from her security guard...got it.