Two people of the same gender and heterosexual orientation who decide to be each others life partners, but asexually; living together but unromantically.
Diane and Mary decided that if they were unattatched by the age of 35, they would move to NY together and be hetero life mates.
by anon December 18, 2004
5 Words related to hetero lifemate
A best friend who is so close, that were they not to match your sexual orientation, you would be married to them. Other sexual orientations may use "homo lifemate" or equivalent.
Yeah Dave's my hetero lifemate. We tell each other everything.
by Dustin Freeman November 29, 2005
Someone of the same sex who you hang out with enough to consider your life mate, but not in a gay way.
I'm Jay, and this is my hetero life mate Silent Bob
by enough of this shit, it's shit January 17, 2009
your closest friend of the same sex, the person you'd be with if you were both homosexual.
*on the phone*

jack: "i miss you man, when are you coming home?"

phil: "next thursday...only 5 more days!"

jack: "i can't wait to see ya bro, i have so much to tell you...you've really been missin' out!"

phil: "i love you, man!"

jack: "i love you too, bro!"

*off the phone*

tina: "man, if i didn't know any better, i'd think you two were gay together!"

jack: "shut up! he's just my best friend, my bro, leave me alone!"

tina: "don't get so deffensive...i know you two are just hetero-lifemates."
by girl7 December 07, 2006
best friends who no longer refer to themselves as best friends. because their so close they know they will never part.
dude are corey and billy gay?
No man their just hetero life mates.
OHH ok dude.
by howdiekiddies March 22, 2008
A platonic soulmate. aka a friend you wouldn't fuck.
She's not my best friend. She's my heterolifemate
by tarancegeezy January 15, 2011

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