A fork of Rural Dictionary
1. K3U is short hand for I <3 U. 2. I <3 U = I love you, basically. 3. K3U originated from Central California in Late 2002.
Girl geek: "I love you, babe!" Guy geek: "K3U too hun!"
I Love You => I <3 U => K3U therefore, the I and the < combine to be a K then come the 3 and the U which become K3U
50: K3U Lloyd. Lloyd: K3U too fiddy.