[tcpederson]

Hi

I'm looking to find movies, books, or TV shows but particularly horror films that have a certain type of triangular conflict. Could someone please tell me if they know any stories that have

1. a triangle in which someone wants to kill (or kills) both his or her romantic interest and the romantic interest's lover. An example I've seen is the horror film Orphan (2009).
or

2. a triangle in which someone is approached by a leader of a group with the third person being a person of the opposite sex who belongs to the group. The leader wants the person to join and the person of the opposite sex loves the person and wants to leave with them. An example is the horror film Lost Boys (1987).

Thanks, Trevor