Lets say that you have a teenage child that has a severe medical condition. It's treatable, but costly to treat, even with insurance. High premiums, coverage limit has already been exhausted, and so on. Anyways, say you make much,much more money than your ex ( father of the sick child) And you both know that you can and will cover the child's medical costs without a second thought. You may be able to afford it, but naturally, the added cost takes a decent chunk out of your savings and your weekly pay check. Would you expect the ex to at least offer to help? even a little bit? There is no child support order. You never felt one necessary, and he always was good about helping out every month...until your child together gets sick. Then all the sudden its crickets. Now remember, you can cover it all...But, would be be maybe a little resentful? Would you bring it up?