When you want someone to move on because you know it won't work but you didn't wanna hurt them.
They kept holding on thinking you'll change your mind.
You didn't.
They finally get the hint because they know there's an actual person they can identify you talking too so now they moving on.
And now you mad
But you happy because they standing up for themselves

and you can finally see them happy and not feel like an a$$hole or watch the pain on their face when they around you.
Moral of the story: don't get comfy when you know damn well you can't see an ounce of an future with said person.