Rope Me, Cowboys by Alexa B. James

Three sexy cowboys. One mishap-prone virgin. What could go wrong?

To avoid a public scandal after a night of too much tequila, senator’s daughter Amber Durant agrees to disappear for three months.
She thinks she’s going to babysit her new stepfather’s three sons on his ranch in Wyoming. Turns out, they’re all grown up. In all the right ways. But she can’t have any of them, because they’re her stepbrothers.

It’s going to be a long three months.