bitches come crawling
A phrase showing that people will inevitably come "crawling" back even if they were the ones who left you, etc. Often can be used to refer to an ex, past hook ups, former friends, etc.
Person 1: "Huh, my ex just started texting me again out of the blue. I wonder why?"
Person 2: "Because bitches come crawling. Just ignore them."
Person 2: "Because bitches come crawling. Just ignore them."