Love rectangles tend to be more complicated than love triangles. They may be a spin-off from the main love triangle, as a sub-plot. It describes a romantic relationship that involves four people, analogous to the typically three-sided love triangle. Many people use this term for a romantic relationship between two people that is complicated by the romantic attentions of two other people or one person who is complicated by the romantic attentions of three other people, but it is more frequently reserved for relationships where there are more connections. An example of a love rectangle in classic literature is in William Shakespeare's Midsummer Night's Dream, between the characters Lysander, Demetrius, Helena, and Hermia.

In 'A Carpet of Purple Flowers' Series ) Books 1 & 2, the love rectangle is composed of: Bea - Chance - Karian - Alithia