Yes, why did the name Camilla suddenly come to mind when I read this?
LOL That is too funny!
I understand what you are saying. And it does sound like your cousin was thinking what is best for the FAMILY. In the OP's case, it sounds like the ex-wife is now thinking of herself first. She has already admitted she's worried & afraid of change. She had something that worked.
But she has kept her ex-husband from growing and moving on to be with anyone else FOR 8 YEARS.
And better yet, he ALLOWED her to dictate his growth. It is past time for him to pull the big boy pants on and put a stop to her actions of telling him how he has to spend "family time". Family time as a threesome - the 2 ex's and their son - ended when the divorce was final.
WHAAAAT??? you are at that point in the relationship NOW.
Umm, how about he grows a SPINE and becomes the strong one in his relationship with his ex-wife??? Set some NEW boundaries and rules.
He has clearly told you that his ex-wife's wishes & demands come first. And if you want to be a part of their threesome, then you have to WEAKEN and comply. This isn't about you becoming strong. This is about you CHANGING to comply with their status quo. Sounds like something HE doesn't want to change or he, himself, is not strong enough to change.
As soon as he pulls on the big boy pants, this can happen. But only until then.
I agree that he doesn't need to be picking up the phone all the time when you are there.