Trust is earned, not given. It will be hard for ye both. Glad there will be transparency.
You don't have to justify your thoughts either here or to W. You were right and are right to have drawn a line. Maybe not immediately or consciously your W will respect you for your stance. You have shown her a stronger you and you will need to be strong and unbending with regards to this. The line is clearly marked. She has chosen your side of the line. Good. But don't let the line be pushed or tested.
Not being naive..... yes some people are just inappropriate without hidden agendas. But inappropriate is inappropriate and opens doors that should be locked in a M.
All the best mate.
R 25 years M 14 years S11 & S13 Working on it alone since Oct 2014 M in trouble a lot earlier (~2 years) Feb 2016. 1st R chat in a yr. Next R chat Aug'17 Still together