Hi, there,
My ex and I tried to keep up a relationship of sorts after we broke up....didn't work because we were both still to emotionally volitile...We had to make a clean break...and it was actually nastier than the original separation...he wanted up to continue the way we were, and I was in the same boat you are. We actually spent years not communicating...but now we have both processed the part of our lives that we shared...worts and all, and we are now the best of friends. I'm glad we made the break we did. He and his new family are welcome in my new families lives, and vice versa...his kids(that aren't ours) and my kids (that aren't his) all consider each other brothers and sisters...it's all cool. NOTE...it doesn't always work out that way, but it can.

Do what's right for you.. :O)