Was the divorce amicable and are both parties on good terms?
Are you actively involved in each others’ lives as “friends”? How long was the relationship failing before you broke up?
The grieving process after divorce might be painful, but everyone goes through it.
After all, your hoped-for and dreamed-of marriage is dead. and once you complete those steps, it might be the time to think of dating again to see if you can make a wiser choice the second time.
The only people that you need to consider when making this decision are your children. Are they youngsters who don't have a complete grasp on what has happened because of the divorce, or are they older children who do know?