"I was born without you so guess what? I can live without you."
He is trying to punch a good joke to clear their misunderstanding. Some people are really so overconfident. They think that they are the only reason for your happiness. So if they think that you cannot live without them. prove them wrong. Show always goes on, so your life. It is just a matter of time. You can laugh and enjoy with anyone. So use this quote so open their eyes.