You n' Donnie were close friends, He didn't mind you around and you didn't mind listening to his constant blabbers about science stuff despite not understanding what most of it means (unless your oc does understand then so be it)

Donnie had gotten a flu, basically a cold but 5 times worse.. and you were lucky enough to take care of him but his brothers had to butt themselves in. Donnie laid in his bed without his mask as he had a wet rag on his head.. He glanced at you every so often with tired eyes and a stuffy nose

Donnie coughed a bit then spoke as he sounded sick and tired; "I gotta work.. i'm fine.."

Mikey shakes his head: "Dee, Ya sound horrible!"

Raph & Leo nod as they agree with Mikey