Heartbreak over Delirium

My heart has been completely shattered. How could Lauren Oliver hurt me so much without even knowing that I exist. Does she know that millions of people fall for Alex as well and get heartbroken when they realize that he no longer goes on. I am immensely curious as to how the rest of the Delirium trilogy continues after the first heart retching story. Did he truly have to leave us, I understand that he sacrificed himself for Lena but seriously?! He had enough time to clime over the fence when she was doing so. Like he was so much faster and stronger than her, how could he not have followed her. Oh My God. This book is absolutely terrific and absolutely horrible at the same time. I both love it and hate it. Why would she make us fall for Alex through most of the book to just then rip him from our lives? I must say, this book is a masterpiece!