It's way too easy these days to identify some undesirable behaviour in a relationship and instantly jump to the conclusion that they must be abusive or toxic, despite the fact that many people have their ups and downs. Throwing an abandonment issue or two their way by ditching them at the first tough moment is hardly going to uplift them, and if you care enough about them maybe what's needed is some stronger boundaries while that stuff is going on.

You'll never nourish such a deep, loving friendship if you're expecting your friends to be basically perfect: happy, easy-going, not giving you any trouble. Going through some tough shit together can really strengthen that bond and open you up to a kind of positivity and happiness you'll never get from those who simply wear it as a mask.