Hi, Annonomous, welcome to PsychCentral (PC). Can't say what's wrong with the person; I'd wait for when they start talking about how sick they are and going to die, etc. and ask about their doctor/medical visits? :-) and if you can help by going with them to visit the doctor.

I'm glad you are not taken in by the stories this person feels the need to create. I think I would relax about their story telling; try not to "challenge" them too much and just know and present your own truth. Keep your own boundaries strong (i.e., if they want you to do something you do not want to or don't think is healthy for them, don't do it) and just kind of "cave" when they get manipulative, not able to "do" what they want that you don't want.