What kind of post-separation experience do want for your child? Your child will survive if they must be engaged with your emotional needs. This means they figure out that adopting your attitude about their other parent gives them more attention and seems to please you. It actually produces calm - a pseudo peace.
For your child to thrive you will be required to separate the relational hurt you experienced from the new parenting relationship that has been created. The result is that your child never assumes responsibility to make it better for you and can freely travel between households knowing that they can continue to love both parents. When your child thrives it will also cause you to thrive.
Give it some thought.