It's possible I'm blowing things way out of proportion here but it's really worrying me. 

About a year ago one of my friends was walking home from school with a guy a few years above when he pushed her against a wall and tried to kiss her. I don't know the ins and outs exactly but her dad (a police officer) went to our school and he's been told to stay away from her. The guy has history for trying this sort of thing with younger girls. 

As far as I knew, she hated him for it. But recently she re-added him on facebook etc and today he came up to me out of the blue and brought up a private joke that only me, her and another of our friends would know. He was being really dodgy about the whole thing and not giving much away. 

Now,obviously it might be nothing and I'm just jumping to conclusions, but I'd be genuinely worried for her safety if she started getting in with him again, what should I do?
user
my friend who got harassed is getting closer to a guy who tried to assault her.
assistant
It's possible I'm blowing things way out of proportion here but it's really worrying me. 

About a year ago one of my friends was walking home from school with a guy a few years above when he pushed her against a wall and tried to kiss her. I don't know the ins and outs exactly but her dad (a police officer) went to our school and he's been told to stay away from her. The guy has history for trying this sort of thing with younger girls. 

As far as I knew, she hated him for it. But recently she re-added him on facebook etc and today he came up to me out of the blue and brought up a private joke that only me, her and another of our friends would know. He was being really dodgy about the whole thing and not giving much away. 

Now,obviously it might be nothing and I'm just jumping to conclusions, but I'd be genuinely worried for her safety if she started getting in with him again, what should I do?
user
friend was harassed, re-added guy from school on facebook, he's dodgy and might try it again.
assistant