a personal attachment that appears to be motivated by love but in fact stems from the hope of gain.
Origin of cupboard love
First recorded in 1750–60
Related formscupboard lover, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for cupboard love
a show of love inspired only by some selfish or greedy motive
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012