What do they mean?

When a man pays close attention to a girl what does it mean? For instance a guy that you had a crush on as a child and you know the feelings were mutual (because you have talked about that fact)but you lost contact for twenty years. He turns back up in your life thanks to facebook.com you start having regular contact by email then five hour chats then eight hour phone conversations and then he comes to see you. He says things like "I'm very fond of you, I've been looking for you all these years ect." all of this goes on for a year and a half. What would you girls think?