The Secrets Between Us by Jennifer Ann

Some people keep secrets because the truth is too painful.
He keeps secrets to avoid losing her.
She keeps secrets to deliver revenge.
Seven years have passed since Cameron Quinn and Lincoln Farrington were high school sweethearts.
Seven years since she last saw him as the cops were taking him away.
Seven years since he left her to become a Navy SEAL.
When he suddenly comes back into her life, she’s forced to choose between following her heart, or sticking to a plan that would almost certainly destroy him.
His secrets brought them together.
Her secrets will tear them apart.