Re: “I fell in love with someone online”
I don’t think it’s pathological per say. It may not be the smartest thing to do though.
I have felt a very strong connection with someone I met online (and grew infatuated/had really affectionate feelings). Luckily (or unluckily) I knew who his brother was, went to the same school and stuff. The guy was friends with a few acquaintances too. So I had some reason to trust the person.
(It’s a different story the person ended up dating my friend who he was introduced to through me, while he knew how I felt about him :p)