Doodle-Buddy

(n.) is a term that refers to a male/female partner in a non-marital secretive romantic relationship, often, maintained though a doodle app on the iphone.

VK: Are you doodling again ?

Lil KB: I don't know what your talking about.

VK: So she found someone else to doodle with, huh ?

Lil KB: STFU! My doodle-buddy loves me.