Although you didn't have to, you wrote him a little note as well, writing the kind little thoughts down and thanking him.

When you'd presented the gifts to Optimus, he was happy. His face brightened up like when you present a kid with candy, and you fought the impulsive thought to kiss him.

He promptly thanked you with a warm smile on his face.

That's when things began to spiral.

Optimus' affections were much more frequent and whenever he would speak to you, whether it was in the comfort of your house (he liked to help around and use his human form even though you insist he doesn't need to) or when you're out for patrol, his tone is fond and warm. That's not unusual for him to do but it felt odd. It's like those few moments when you're talking to a crush or lover.

That thought made your face hot and you quickly tossed it away. That wasn't it; there was no way he would talk to you in that way.

When you bring it up to Ratchet, Optimus' closest friend, he has an unreadable look on his face before swiftly recovering.

"Do you know about Conjunx Endureas or Conjunx Ritus?" The medic asks you, looking uncomfortably serious.

The lost look on your face was enough of an answer and he ex-vents. According to Cybertronian culture, you learn that you had accidentally proposed to Optimus fucking Prime.