It hurts. First Aid's already small, weak spark constricts as the heartache returns, making pain shoot through his limbs. It's stupid-- a friend already would hurt, but he... He had feelings. Incredibly stupid feelings, since it wasn't like they were reciprocated.

He should follow his own advice sometimes.

"Okay. Promise."

First Aid doesn't let go of Sixshot's thumb, but he lets his optics power off and his systems plug back into recharge.