What are boundary crossings?

I think boundary crossings are not a "one size fits all" kind of thing. Boundary crossings can be different for each individual based on their own experiences.

I don't have experience with pdocs but I can say, all of my T's have had a different set of boundaries. With one T, it was very important to hold tight boundaries.(Begin on time, end on time...Mirror for you, you can't know anything about me mentality.). With another, we met at her house. She shared lots of personal stories with me and I totally related to most of them. My current T is much more like my second T. Boundaries, but not so tight he is inflexible. I recently was invited to a shower his wife is hosting. It is not at his house, but he recently shared, I am welcome to his home anytime I am invited. Just the thought, makes me a little uncomfortable, but I do appreciate the gesture.

Can you ask him why the sudden change?