'Cupboard love' definitions:

Definition of 'cupboard love'

noun

A show of affection motivated by selfishness

From: GCIDE

Cupboard \Cup"board\ (k[u^]b"b[~e]rd), n. [Cup + board.]
1. A board or shelf for cups and dishes. [Obs.] --Bacon. [1913 Webster]
2. A small closet in a room, with shelves to receive cups, dishes, food, etc.; hence, any small closet. [1913 Webster]
Cupboard love, interested love, or that which has an eye to the cupboard. "A cupboard love is seldom true." --Poor Robin. [Colloq.]
To cry cupboard, to call for food; to express hunger. [Colloq.] "My stomach cries cupboard." --W. Irving. [1913 Webster]