Recommend a tearjerker.
This is a tough one because I read a lot of tearjerkers (it's one of my favorite things to have a book be so good/sad that it makes me cry!).
In general any of Lurlene McDaniel's older books are tearjerkers and I don't recommend reading them in public unless you want to become a blubbering mess. However, one particularly good one that I read last year is:
Never Eighteen by Megan Bostic
Summary: Austin Parker is on a journey to bring truth, beauty, and meaning to his life.
Austin Parker is never going to see his eighteenth birthday. At the rate he’s going, he probably won’t even see the end of the year. The doctors say his chances of surviving are slim to none even with treatment, so he’s decided it’s time to let go. But before he goes, Austin wants to mend the broken fences in his life.
So with the help of his best friend, Kaylee, Austin visits every person in his life who touched him in a special way. He journeys to places he’s loved and those he’s never seen. And what starts as a way to say goodbye turns into a personal journey that brings love, acceptance, and meaning to Austin’s life. (goodreads.com)
So yeah, this one is heartwarming and so sad all at the same time. It's not particularly intense, yet it has this simple power to throw your emotions completely out of whack until you're bawling at the end.
Come back tomorrow for more of my exciting book secrets! (Haha).