I know that you do not need to be concerned about me, because there were so many to choose from and I am not the person that you like. I walked away, it doesn't affect your life.
I know you do not need to care about me. Because there are so many to choose And I'm not the one you like. I walked away, it does not apply to your life.
I know you don't need to care about me. Because there are a lot of people to choose from, and I'm not the one you like. I walk away, it has no effect on your life.