Thank you for your support folks (and sort of for the kick up the bum).
forever, I have talked to DS1 over the years, what I meant was specifically about this issue. However, I did talk to him last night and it was a good talk. He confirmed much of what DS2 has told me, but also said that he remembers being DS2's age and just wanting to be with me (Mum) cos that's what little kids need, rather than not wanting to be with Dad as such. I used to go to choir once a week and DS1 was saying how he didn't like those evenings (first time he's told me that, and it was 9 years ago!)
I WILL start the email today. I won't go straight to court - they will want to see that the parents have made some effort to resolve things outside Court.
I think I will (as random advised) just keep to facts and not fill it with suggestions of what I think is best for DS2; that will make him defensive.
I won't show it to DS2 as he will become incredibly worried.
This inaction is pulling me in both directions. I feel I'm letting DS2 down but am also protecting myself. Standing up to my bully has cost me a lot emotionally, physically not to mention financially, and starting on that route again scares me. Ex has not changed a bit - he is full of resentment and belief that it's all my fault and even though I know that's not true I am still working on how to deal with it and it's hard. But the time is right now (Xmas out of the way, a calm few months ahead, no kids doing exams etc). I have a good support network and people I can call if the abuse ramps up.
And now I'm off to bootcamp, then shopping with DS1 for uni stuff, should be a good day.
forever it's not quite 50:50, but 60:40.
I would very much prefer to resolve the issues of concern rather than have full or nearly full residency of DS2. Apart from DS2 needs, it would be very, very hard for me to manage my work and other commitments which I think would not be good for me (and therefore DSs).
As an aside, over the 3 weeks DS1 has been back from uni, he's seen his Dad only 3 times.