I know someone, was "friends" with them for awhile, until they "took" my life. What I mean by that is, that suddenly whatever and I do mean whatever I was into, they were too. I finally ended the friendship for various reasons. But now, there is another friend (I have known her longer that the other person has) she is now the recipient of this other ones "sharing" of activities. Apparently , the mutual friend is already tiring of it. It is one thing for two people to become friends because of an already shared interest, but for one to come along and suddenly become involved in everything you are in to is just strange to me.... The curious side of me wonders if there is a mental condition that would cause this?