Entanglement with Amos, Gene and Rita? (6,1,5)
I believe the answer is:
menage a trois
I'm afraid I can't even guess how this answer relates to the clue.
Can you help me to learn more?
(Other definitions for menage a trois that I've seen before include "household of unusual size" , "living arrangements" , "Triangular relationship(s)" , "triangular arrangement" , "complicated arrangement!" .)