Parents with Benefits
When two individuals, who are parents start seeing each other.
Toby has a child from a previous relationship. Toby starts seeing a woman called Emily who also has a child from a failed relationship. Both are unable to commit to anything serious, but enjoy the casual nature of their relationship. To keep things going, they agree to be Parents with Benefits. Their separate children can play together and later the adults get their own play time. However Emily finds someone else, and her situation changes. Seeing that her and Toby can't continue, they end the Parents with Benefits, but remain friends still. Their children still play together.