Top Definition
Similar to a love triangle, this is a convoluted mess of infatuation in which three people are competing for one persons affection. (a square is when everyone has a thing for each other, and a trapezoid is similar to a rhombus, but involves one homosexual)
Janet: "so Josh told me that he loves me!..but so did Jim...and Jeff; I just don't know who I want!"

Jane: Woah there caught in a little love rhombus, eh?
by ziaaaventurahigh May 06, 2010
1 more definition
amorous involvement of two couples- one straight the other gay
Since the Sade party, poor Mena has been in a love rhombus from hell.
by cisco dzid March 03, 2008

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