I like this article.
It talks about one word we can use in our relationship that makes everything a little easier. Because we know that not only can the one we love make us feel amazing, but they also have the power to make us feel like absolute crap.
Here's one word to say when they do. It's "Ouch."
As in "You look like crap! Don't you take care of yourself anymore?"
"Ouch. That really hurt."
And that's supposed to lead to a dialog that brings all that out in the open so you can talk about how they hurt you.
My only addition to this article would be that if they don't care that they hurt you, or they keep hurting you more than they make you feel good, you have a sh***y partner.