When your parents live together, they are both responsible for taking care of you. When your parents stop living together, this might change.
For example:
One parent might have sole custody. This means you live with one parent, who takes care of you everyday.
Or both parents might have custody. This is called joint custody. You might live part of the time with one parent, and part of the time with the other, or live with one parent—but both parents help make decisions about things in your life.
