Rebuild trust

Hey so in my last post i talked about how my boyfriend crosses a boundary after repeatedly asking me/threatening me to use a cane.

Even after i said no, repeatedly he kept pushing. It ended up with me having a panic attack and him trying to help me through it via text. Now its been a couple hours and I've somewhat processed my emotions.

This is the first time i reacted this intensly to a suggestion of his and I understand where he was coming from but at the same time it feels like i cant trust him anymore.

So my question is. How can he rebuild trust in a way that shows he understands what I say?

We were planning on having some big scenes once he got back from a work trip but right now the idea of trusting him with my submission terrifies me.