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A term used mostly by Filipinos for two people who obviously like each other, but have not yet committed to a relationship. So both parties are still free to go out on dates with other people.

It's a vague area between being friends and boyfriend/girlfriend.

Basically, it's like an open relationship.

(Shortcut: MU)
Guy1: Dude, is Jess your girlfriend?
Guy2: Nah, we just have a mutual understanding.
by LastMinutePanic March 04, 2009
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