"I'm not going to need a look out," Mike's gaze snapped over to Billy, surprisingly hard. He takes a few steps, gaze level with his. "I need you on this."

Because the other is making him a little paranoid. A little suspicious. Sure, your first time with a dead body isn't all that peachy. Mike remembers throwing up, too, and he doesn't have a thing with blood. But Billy... Billy is normally calm and composed. Even if he doesn't want to do anything. Now?

Mike puts a hand on the other's shoulder. Squeezes, staring him straight in the eye still. "You're not going to run, Billy," he repeats. "I might start to think something's up with you."