Derailed (Megatron x Optimus Prime)

Optimus Prime can't figure out why that devilish, devious, dastardly Decepticon warlord won't leave his mind no matter how hard he tries. It's been keeping him from work, keeping him from fighting properly, and worst of all, making any interactions he's had with his teammates recently unnecessarily awkward.

Meanwhile, Megatron can't figure out why that magnetic, magnificent, measly maintenance bot won't leave his mind no matter how hard he tries. It's been keeping him from work, keeping him from fighting properly, and worst of all, making any interactions he's had with his underlings recently unnecessarily awkward.

Alternatively, where it takes four uncomfortable interactions and one genuine one with his friends for Optimus Prime to realize that he's in the midst of falling for the worst mech he could've possibly chosen, and where it takes two uncomfortable interactions and one spite-filled one with his underlings for Megatron to realize that he's in the midst of falling for the sweetest mech in the universe.