I'm in a similar situation (recently split from H) so would like to hear success stories too...
But on a positive note - my parents separated and divorced when I was very young. They both went on to re-marry and have more children. So here's my two pence worth....
-I loved my step dad. And my (half) brothers and sisters were the best thing that ever happened to me (hated being an only child).
-I was never jealous or resentful. I have an amazing relationship with my brothers and sisters.
-I love my step dad for treating me like his own and always being there for me.
-My mum was an absolutely wonderful wonderful mum who went out of her way to let me see my dad (even when know at times, e.g. christmas, it killed her as she was alone). She always sent me off with a happy smile and bags of presents for my dad and his family. I admire her strength so much.
-I love my dad's family and finally do have a good relationship with my dad (resented him for leaving my mum for a while).
But I also acknowledge my dad's faults, and realise that it was my mum's strength and love for me that enabled me to have this relationship with him. I feel my dad should be greatful of how supportive my mum was in the face of what he did to her.
-I am so grateful for my mum putting me above everything else, that and I hope I can learn from it when it comes to ds's relationship with his dad.
- I must add that whilst I love spending time with my dad, my mum is my world. I hope she knows that. (Should tell her more often!)
-I am well balanced (mostly! ). Have a beautiful child, great career and fantastic friends. (Shame my H turned out to be an arse!)
As for the pain of the breakup. Well the pain of my own breakup is very raw. But when I talk to my mum over what happened to her, she says she'll never forget, but she has come to terms with it and it doesn't hurt anymore. Mum&step-dad, and Dad&step-mum all get on very well and even send each other birthday/christmas cards etc!
They go out of their way to make sure all of us children are treated the same and above all, we know we're loved.
Out of what could have been a very messed up life - there has blossomed a lovely, amazing, supportive and loving family. So it can work out well