The Billionaire Bad Boy Club by Michelle Love
This book was gifted to me. This is so full of drama, trauma, twists and really messed up people. Nic falling in love with Natasha is about the only predictable thing in the story, and some stuff catches you completely off guard. It's so engrossing it draws you into the story a little at a time until you can't put it down, you have to find out what could possibly come next. It has some BDSM in it, but mostly it's the tragic story of Natasha.