Do They Ever Think About the Person They Left Behind?

What happens to those people who leave someone in such a condition? Do they ever have to go through a healing process themselves? How do they manage to stay happy after hurting others, making them feel disrespected and worthless? My self-respect has gone deep beneath the ground. What hurts the most is how badly I treated myself. My inner self also deserves love, care, and respect. And the other person doesn't seem to care even as much as a grain of sugar about how that person is coping with everything.