Hoping this can be saved, but having doubts 3

[reframe]

She asked if she could walk the dogs tonight (instead of taking one of them) and said I could join.

I think that is harmless enough. I'll walk the dogs with her and talk in person.
I think my position needs to be:

"If the relationship with OM is fully terminated, I am willing to go to a neutral and supportive third party and see if we have anything worth saving. No guarantees that we do"