Oceans Submerged (Oceans Trilogy #2)
M.A. DeOlmos, Marya Heiman

The moment he laid his eyes on the exotic beauty, he was hooked. In that split second of looking into her wild and hurt eyes, his heart began to beat again. He knew then that he would never be able to let her go... but was that the right thing for him to do? Because yet again, Ocean found himself surrounded by a familiar darkness, a pain so strong that even breathing hurt, and living felt impossible. He'd pushed too far in the effort to love and help her, and now... now he didn't know if he'd ever see her again.
Lawrence Hawthorne has been through the ringer when it came to hurt and disappointment, but nothing could have prepared him for the possibility of losing Livie. He'd just found her and now-well, now he didn't know what to think. To him, Livie was more than just a girl, more than just a friend. To Law, Livie was someone he needed to help and protect, even from herself, and he'd failed that simple task. Will the Hawthorne cousins who have sworn to protect Livie survive her selfish act, or will they crumble, yet again?