Everything got very tense after Leo got brainwashed... he wasn't the same, no one was...

You've been there from the start, always been with the turtles to help and support them, and they did the same for you. You were there when Raph got super mad at Casey's dad and went after him when Casey went to April's house beaten up. You were there when Splinter was kidnapped by Shredder and the sewers were ambushed and flooded of M.O.U.S.E.R.S. You were there to help them in times of need, but now?

You don't have any idea of how to help.

You tried to talk to Leo but he'd answer shortly and walk away, you'd try to ask for guidance but you were only told to give him time, which you did, spoiler alert: it didn't work. It was maddening to see them all so... scarred.

But well, life goes on, don't it? And guess what? You know have problems as well! :D God knows what happened to you, maybe family problems (ironical), or woke on the wrong side of bed, but you absolutely needed to vent out or else you would explode.

So, I your despair, you tried talking to Leo (I must specify that it had been around a month since the brainwash thingy was broken). What you didn't know is that he was on edge, still processing everything that happened with being brainwashed, trying to make a plan to beat Shredder AND stop the Technodrome from destroying earth was no easy for, well, a teenager!

But then again, you didn't notice and rambled endlessly about your problems while Leo tried to remain patient with all his might, but it was getting so overwhelming that he was just going to snap if you didn't stop talking...

He was about to completely snap.