Haven't we met before?

Haven't we met before?

A phrase used when one recognizes someone or thinks they look familiar. It can also be used flirtatiously when trying to start a conversation with someone that one deems attractive. Haven't we met before? You look really familiar. "Haven't we met before?" is Ed's favorite pick-up line, even though it has a very low success rate with the ladies.
See also: met, we
References in classic literature ?
"Haven't we met before?" asked Miss Allan, looking at her.
You go into a bar and walk up to a woman and say, 'Haven't we met before?' or some s...t and she looks at you like [she's disgusted]," he explained.
IT could be a case of 'haven't we met before?' as the final round of the Portugal Masters starts this morning.
FLASHBACK: Bill kisses Lewinsky; HAVEN'T WE MET BEFORE? Bill gets to grips with the mystery brunette in London
HAVEN'T WE MET BEFORE? Botham introduces his team to The Queen in 1980 and (above) May 26th's Mirror