Board Thread:Questions and Answers/@comment-70.181.247.204-20130629210827/@comment-11599990-20130813110840

April has hugged Donnie 4 times over the course of the series.

First time was in the gauntlet is was a reaction of greif for losing her dad again. April probably would have hugged any of them at that moment. Donnie just happened to be standing near her at the time.

Second time was at the end of TCRI when April runs up and gives more of a "I'm glad your okay" type hug.

Third time in Operation: Breakout because Donnie had finally saved her dad.

Fourth time Donnie gets hugged before everyone goes to face battle with the Kraang.

Donnie clearly has the closest relationship with the April out of all the turtles. But I don't think it's actual love just yet.