Passion's Bride (War of 1812 #1)
Jo Goodman

"Don't make me love you," she whispered, and the steely look in her eyes warned Tanner not to take her words lightly, even while her supple body responded to his burning kisses. She had captured his soul with her heart-wrenching beauty and courage. But Tanner was a man used to having his own way. He would keep her prisoner rather than risk losing her and he would caress her tenderly savagely until she lost all thought of anything but becoming Passion's Bride!
Also published as The Captain's Lady.