How we feel about ourselves is always going to be reflected back to us. So if we're not feeling the self-love and we're not talking or treating ourselves lovingly, it's guaranteed that someone is going to remind you to love yourself via challenging relationships or seemingly difficult people or toxic situations.
No doubt they are going to peeve you and it's very easy to blame, judge and criticize the other person. But they're not only teaching you to love yourself, they are also teaching you to be kind to yourself and to respect yourself.
When you can align your thoughts with your beliefs and act accordingly, your relationships are going to reflect a healthy relationship with SELF.