best-friend-in-law 

when your best friend is dating someone the boyfriend/girlfriend becomes your best-friend-in-law

person Dada ad person Sham are dating and person Sham and person Yaya are best friends,Dada and Yaya are now best-friend-in-law

best-friend-in-law by Millionaire Hippe May 13, 2011

Facebook friend zone 

When you add/are added by a person of the opposite sex on Facebook, and it leads to you developing a platonic friendship instead of the originally-intended relationship

I added Kristie on Facebook to get to know her and ask her out, but it isn't working out. Now I'm in the Facebook friend zone.

Facebook friend zone by FBFriend13 September 24, 2011

faraway friend 

Friend lacking much benefit or daily interaction:one contacts the other friendly favors are needed

The guy and girl are faraway friends who live in the same city.They only contact each other for informative reasons or for trade,insight or buying of goods services,etc.

faraway friend by La_femme_boss November 23, 2013

best friend 

A mutual feeling when you put someone first and they do the same to you. The may have other friends but your number one

Wow Kate is literally my best friend. I can tell her anything.

best friend by iknowwhatthatmeans May 23, 2015

Little friend 

A way to refer to someone's penis without using the word itself.

Your little friend was great in bed last night.

Little friend by Know-it-all2005 June 11, 2016

Fake Friend

A single person that pretends to be friends with you only to maintain a friendship with your partner. Often causing relationship problems of doubt and mistrust.

She acts like she's my friend too, but she's a fake friend, always texting my husband trying to make plans that don't include me.

Fake Friend by Calibabe6 April 19, 2018

conditional friend 

individual friends of a couple are conditional friends of each other because after the breakup they have to be only friends with their original friend

"I can't talk to John as I and Danny have broken up, he was my conditional friend.

conditional friend by inskisspiss June 6, 2018