So many good points there as it is so easy to 'lose" yourself in a toxic relationship.
Finding your voice is key and as you point out that's where assertiveness training comes in handy- for
drawing up the "terms and conditions" of the relationship, so to speak.
As LostGen said adding "jehovah" factor to the equation makes it impossible to negotiate a healthy
relationship with that person as they have to run everything past their WT trained conscience first.
At some point you have to ask the yourself "is this really worth it?".
With some people it's a case of "call me when you can think for yourself, and our relationship means more to you than the WT does".