ZaDR-Oil and Water: The Stars Align

Zim and Dib had never gotten along and yet, they've also always been obsessed with each other. Now they're high school seniors and have been spending A LOT of time together.
Late night binging Mysterious Mysteries in a dark room results in them falling asleep together. Dib can't take his eyes off Zim's sleeping face or stop his heart from pounding.