^ With kids, no matter their age, you have to have some level of friendship with ex..
You don't. My long-term XGF saw her XH during Back to School Night last year, and it was the first time she'd seen him in 3 years. I'm friends with my XW and we have no interest in meeting new partners. My GF is friendly with her XH and he's okay with meeting me. I've been amazed in my 11 years since divorce how many different varieties of ex relationships are out there. I recommend against "feuding" with your ex, but beyond that, it's whatever works best for you.
