The Getting Over Part

Don't leave please turn around. Your silent tears hitting the ground. Was the loudest sound. Thinking about all the times I let you down. I heard once hearts never break even. Must be true because you're having the time of your life and I'm barely breathing. You left my life fell to pieces and I still haven't collected them all. Up all night wondering if you'd answer if I call. I just need to know how it was so easy for you to move on. When I'm stuck here what am I doing wrong?