I have a friend facebook that know her actually from my neighborhood . We used to go at the same school and we used to play as kids sometimes,together.The problem is,She obsessed with chatting on facebook .Each time ,i'm on chat she's writing to me.Today when she sees that i'm on facebook and i don't have open the chat and she sends me message to open the chat .Omg i think she gone crazy,i think.She doesn't seem lonely person but u never know.What i should do?