addiction to lurking
To repeatidly look someone or something up on a website, such as Facebook.
Frank: I saw you broke up with your boyfriend?
Jillian: How do you know about that?
Frank: Oh, I have an addiction to lurking you on Facebook
Jillian: That's pleasant
Jillian: How do you know about that?
Frank: Oh, I have an addiction to lurking you on Facebook
Jillian: That's pleasant