The Billionaires: The Stepbrothers by Calista Fox

The Billionaires is a great Calista Fox series. Most of these books have taken place in a small town called River Cross, but this story splits time between New York and Montana. The two men featured couldn't have been more different or more supportive and protective of each other. Both feel for Scarlett pretty much on sight, but neither was really looking for a relationship, particularly Sam whose last relationship ended in tragedy. Both of the step brothers are suspects in the possible insurance fraud Scarlett is investigating, but both proclaim their innocence. The further Scarlett investigates, the more certain she is that whatever results she finds will destroy fragile relationship she is trying to build with Michael and Sam.

If you like super sexy and don't mind a little bit of two on one fantasy, then this is perfect for you since it is not just steamy but actually has a real plot with some convoluted issues. 

I requested an ARC from Net Galley.