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1.
1. stealth date -(noun) A date where one of the two people doesn't know it's a date, i.e. trying to come in under their radar; a date that one or both people don't admit is a date

2. stealth dating -(verb)a.k.a. 'stealthing'- Dating someone (or thinking you are) without telling them; deliberately misleading the other person as to romantic intentions; dating someone without admitting to them, your friends, or yourself that you are actually dating
He said he was okay just being friends, and then I found out he was stealth dating me!

What? She insisted on paying? That was a stealth date!

Amy said you two never dated, but you guys were stealth dating.
by Trulee & Christie December 12, 2006