loose friend 

What you call a friend when you aren’t dating but are kinda talking

Oh yeah, you and your loose friend Rae

loose friend by Dead4Decades December 17, 2017

International lose your friend day 

On January 24th we all lose sm1 really close to us and then they become an asshole. I mean like it happened to me

Oh u lost a friend on the 24th same.

Odd that it was on the same day.
I guess that's what happens on International lose your friend day

International lose your friend day by mills.com January 26, 2021