Top definition
The act of a couple in love going very well until it finally stops. Because the girl has been with the boyfriend's best friend for a bit and has been keeping it "Blackmailingly" secret.
While Kirstening their relationship I realised i'm a cunt!
by Wittlebee November 16, 2010
Get the mug
Get a Kirstening mug for your friend Nathalie.