Scars of Silk by Anna Bloom

Casual isn’t meant to hurt.

Dan Smith is in love with his best friend. So when he finds himself drowning in his grief, despair and loneliness pulling him down one final time, he expects her to step in and save him … He doesn’t expect a glamorous and beautiful socialite to step in. With her skin of the smoothest satin and her posh accent that could cut glass, she is the very last person he would ever have expected.
Sienna Richards has been toeing the family line her whole life. Unable to break free of the chains that prevent her from living with her future truly her own she plays the perfect daughter while trying to gain her freedom. She doesn’t expect it to come in the form of wide muscles, endless tattoos and a dark tendency for destruction.
He’s from the wrong side of the tracks. She’s tied in the silken restraints of her family. They’re exactly what each other needs, even if it can never be more than a casual arrangement. It can never be anything more, even if there’s a chance that together they could be everything.