I just wanted to ask you why you think you have to justify his behavior like this and then I read this
so I don't need to make you notice it. I do want to say that even if you had shown cleavage, staring at women's breast is just not something you do, it's called manners.

I'm a woman yet I have the opposite problem when it comes to breast size so I don't really know how it must be to be stared at like this. I do however know the 'you're an object' looks so I kinda do know what it's like!?
Anyway, on one hand, your T is just a man you know, he's human and a man and I'm pretty sure he wasn't aware that you caught him. However, he's your T and that makes it inappropriate. I don't know about you, but to me, therapy should be an asexual place somehow. So I think it was inappropriate of him.
I don't know the story of you and your T but it sounds like you do have some differences.

Are you sure he doesn't like you or are you projecting things or reading things into this that aren't true? I know I thought and sometimes still think my T doesn't like me just because I feel like people who really know me, just can't like me and because of other issues but this is about you, not me.
Your T shouldn't care at all if his wife is your boss or where you stand in this hierarchy. And it should definitely not influence your progress in therapy.

Does he get defensive if you criticize him or why can't you tell him?
sorry if this post is a bit all over the place, I'm awfully tired.