There's only so many times you can allow someone to let you down before you can't handle it anymore. When things change, people change, and it simply means you try to move on and treasure the memories. Letting go doesn't mean giving up, it means accepting things that weren't meant to be. There's a point in your life when you get tired of chasing everyone and fixing every little thing, but it's not giving up. You've got to do what's right for you. Even when it hurts.