I had been caretaking for so long that it was habitual and addictive. However, once I realized that it was controlling rather than loving, I became determined to heal this addiction. I'm happy to say that loving myself and sharing my love with others is what I do most of the time now, and it brings me great joy!
If the other person never opens to caring conflict resolution, then you need to decide for yourself how to take loving care of yourself in the face of the unresolved conflict. This means accepting your helplessness over the other person and doing your own inner learning to discover what would be in your highest good.