look up any word, like fleek:
 
1.
The perfect number of 3s applied to the standard <3 heart. 7 3s is a way of saying "love you" (7 letter phrase) but through a heart rather than words. Only to be used though electronic messaging however.
bf: Goodnight sweetie <3333333

gf: Goodnight :) Love you too
by bsj<3 January 29, 2011