Hi L&S, I can tell you what worked for us that weren't 'rules' at the time but looking back, were things we just did and that made for an amicable divorce. So my advice isn't really about practical stuff so much, as about emotional and other stuff. I'm afraid I'm going to just give you everythign off the top of my head so not much logic or order to this:
- I've always tried not to criticise ex dh or to ever say anything negative about him to ds. There have been some times when I have but only if I've said it to ex dh's face too, eg I think he lets ds have too many late nights at the weekends. It helps that ex dh is a thoroughly kind, decent and nice bloke, just not the right bloke for me. It sounds as if your case is similar in some ways. I got pregnant and we tried to make a go of it too (and failed) but I really have no regrets, my ds is wonderful as is yours, I'm sure.
- I've maintained (extremely but helped in my case by liking her enormously) good relationships with my ex ils and they have a very good and close relationship with ds (and dd, who isn't biologically related to them). I know your ils are erm, dour? Is that the right word? So maybe you aren't as close to them as I was to my mil but that's no reason why you can't keep them involved in your ds's life. He gets doting grandparents, you get lovely childcare.
- Maintenance. Don't under agree to this. Consider that your life will be extremely constrained because you will have to pay childcare AND work AND manage a house on your own whereas your ex will merrily skip to work every morning unfettered. I know that's the price you pay if you have residence (which is what it's called these days!) but it's still EXPENSIVE! He should contribute to childcare if you can get him to plus maintenance towards the costs of bringing up your ds. It is a different proposition, having to house and feed and look after yourself AND a baby and so your expenses are higher and it is fair enough to expect your ex to recognise that. FWIW I get £600 a month from ex for ds and realise that it's a lot more than some people get but actually, the costs have been WAY way over that. I was a sahm for 3 years, I have always needed another bedroom for ds, I've had to pay childcare etc etc and while I don't remotely resent it, not AT ALL, I am so pleased ds lives with me, it does all add up and frankly, £600 is a drop in the ocean imo!
Try to agree some ground rules about your ds seeing his dad, we've done every other weekend for 8/9 years (ds is nearly 11 and was 2 when I left ex) and a couple of weeks in the holidays. It's all v flexible and friendly but at the beginning I think it's good for children to know where they are.
Don't move 200 miles away from your ex. I did this and it was blindingly stupid move. However, I did meet dh#2 there so there was s silver lining but only after years of shlepping up and down the M5 (from Devon to Bristol, and ex would go from Ealing to Gordano) for a few years. Bloody MAD, what WAS I thinking? So do think about convenience when you think about where to live.
No idea about the legal or paperwork stuff except that we were married and eventually had to complete divorce paperwork, all relatively painless so I feel sure you can split up as a non married couple in a painless, (paperwork-speaking) way.
Also, be prepared to think about wanting to go back if you have some times of hard slog where you just don't want to be alone and wonder if it would be better to be in a less than great relationship than to be alone. I nearly did this and it would have been the wrong thing to do but it was SO tempting when I felt so alone and ds wasn't sleeping and it was just bloody hard etc. I'm glad I didn't.
Make sure you have plenty of support from friends. TELL them if you need them, they might not know otherwise.
FWIW, I have been very happily with dh#2 for 8 odd years and we have dd, who is now 5. Ds and dd are very close, despite the age gap and we are all, in the main, very happy. Our blended family works well and we all love each other. Dh is lovely with ds and has been a huge part of his upbringing and dh and ex dh get on well and are friendly. Ex dh spends plenty of time here and ds sees that we all get on (and ex will back me up on the big things and vice versa).
And do post here when you need to, it's such a useful thing to do. I wish I'd had it back then!
Good luck xxx