Relationship is like jail in a way. Why?
When you get out of jail you have to get used to freedom again,
just like after ending a relationship

In jail, just like in a relationship, there are certain rules and obligations.
While serving your time you make new friend and get used to their company.
And when your sentence is over you are lost in a way.
No more rules and obligations to help you plan your day,
your friends are still in jail which makes the relationship complicated.

This is why I understand when people in series do something wrong just to stay in jail because they think that they got to used to that life too much to try to make one outside the prison walls.
Just like that people in real life stay in relationships just for comfort, just because they are used to it and afraid of the world outside of it.

“And when it’s over, and it’s gone
You almost wish that you could have all that bad stuff back
So that you could have the good.”