“Just Don’t ever Leave” is not just applying in a relationship but in each aspect of your life. It simply just a reminder that when you are anxious, angry or disappointed, just take some time to breath and cool off. But do not walk away and believing that “walking away” is the best solution of everything.
If you are easily uttered those sentence when you are angry “like you are leaving and such”, that is becoming a pattern in your life. And that patterns will not going to change in every relationship you’ll be having in the future and it’ll be repeating again and again :)
So you better break the patterns and recalling back what made you said, did that so your current or next relationship will not based on fears and insecurity or anxiety but based on love and trust :)