Heart Bones by Colleen Hoover

Samson and Beyah have nothing in common on the surface! She comes from a life of poverty and neglect; he comes from wealth and privilege.  They’re both broken and are drawn to sad things. “Damaged people recognize other damaged people. It’s like a club you don’t want a membership to.” Their insta-connection is too intense for them to be in denial. Beyah and Samson agree to stay in the shallow end of a summer fling. What Beyah doesn't realize is that a rip current is coming, and it's about to drag her heart out to sea.