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1.
The act of sending out flirtatious, but non-committal text messages (ie "breadcrumbs") to members of the opposite sex in order to lure a sexual partner without expending much effort.
Kelly started breadcrumbing early in the evening in the hopes that one of guys she'd been working might show up for a late-night booty call.
by August Dawn October 25, 2010
 
2.
Also known as "Hansel and Gretelling"

When a guy or girl gives someone just enough attention to keep their hope of a relationship alive.

First coined by Grazzz 2014
"He keeps texting me but doesn't want to set up a time to see me."
"Yo girl he's bread crumbing you"
by Grazzz September 23, 2014