+1

Your Significant Other, Date, Wife, Hetero-Life-Mate, etc.

The person that goes along with you to events, or just accompanies you through something like a night out or the rest of your life.

From invitations and guest lists, ie. Gary Applebottom +1.

"i don't have a +1 for tonight..."
"sorry, couples only - put an ad on craigslist"

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