Junjou romantica questions?!

I watched season 2 episode 5 and I was wondering whether usagi will initiate a break up with misaki!? He kept saying that's why!.!.!.that's why!.!.
It left me huh!? That's why what!?!? anyone knows what he might be trying to say!?
also I read a comment saying that in the manga, usagi is going to leave misaki!. Is that true!?!! I hope not!!
I need clarifications!. Thanks!!Www@Enter-QA@Com

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