My husband and I met in the middle of his divorce. We waited until the divorce was final before we pursued any romantic pursuits (including dating); a fact for which I am grateful b/c now his ex likes to credit me with the breakup of their marriage - she had 3 s.o. during the divorce, with pictures and dates with the kids to prove it, and my oldest s'kid was old enough to remember daddy being home alone until it was over, while mom already had a live in.
That said, we dated for 2 years and we'll be celebrating our 5th anniversary in January.
I think waiting until it was final, and a lot of luke warm before we went romantic, helped prevent alot of the rebound issues that seem to cause problems after divorce.