You and donnie are in the dojo doing some ninja training. You had been into being bullied at your school/work for countless days. After all the training, you and donnie went to get a drink of water. As you drink water and take a break, donnie clears his throat.

Donnie: you know, y/n. We have been friends for sometime.
You: and?
Donnie: and.... ever since me and my brothers encounter you from the intense ranting from the anti hater, my heart had exploded the first time I saw you. Y/n... I have a crush on you.

When donnie said that, you accidentally spat out water right in his face until you choke and cough!

Donnie: ackkk! What the shell!?

You try to breathe and compose yourself from all the coughing and you wipe your mouth with your arm.

You: sorry, Don!
Donnie: jeez! Way to make a mutant lose his confidence...
You: the way you said it.... caught me off guard.
Donnie: well *nervous laugh and scratches thr back of his head* it's not every day a mutant turtle like me would confess his feelings to a human boy/girl. Guess I should've expected a more... dramatic reaction.

You see that it's almost time for you to go home for bed. You stood up and pook at donnie.

You: sorry I spat water on your face. See you Tomorrow.
Donnie: Eh, it's fine. At least it gave me an excuse to wipe my face, huh?

After you left, donnie smile as the blush shows on his cheeks.