I can understand the freak out if you equate him going over time to him seeing you as that kind of person. But he DOESN'T, I promise. He goes over because he sees you having a rough go of it and he cares about you and wants to help. And he does not yet realize that what he is doing is the opposite of helping.

Oh, it suddenly occurred to me that this may be your T's version of WANTING you to push boundaries, the way mine suggested. He knows how strict you are and wants you to see the world doesn't end when you bump them.

He really needs to take a step back and realize he may have gone a bit too far though.

Just a reminder though, you ARE NOT that kind of person and your T knows it. That is exactly why he feels like he is able to go over with you. You are not going to take advantage and try to linger everytime, or just hang out and refuse to leave.