Attachment Injuries during childhood are directly linked to adult Codependency.
You need to give yourself that which you never received when you were a child.
Your Narcissistic Partner will never be the Corrective Experience for that Attachment Injury.
Quite the contrary, the Narcissist was attracted to you because of your Codependency which made it very easy for them to Use and Manipulate you.
You need a healthy relationship, where your partner can show you that they care about and love you and that “you matter” to them.
Narcissists lack empathy and so are unable to care about or love others.
To a narcissist your only value is in you being a source of Narcissistic Supply, which can and usually will be replaced with a better source of Narcissistic Supply. Narcissists are always “hunting” for new and better sources of Narcissistic Supply.
Video is courtesy of the Alan Robarge YouTube channel.