The Unwilling Heir to an Immortal

When security guard Ethan Mercer saves a drugged heiress, Elena Hawthorne, she marries him. But the Hawthorne family sees him as nothing but a kept man who married up for money. Ethan doesn't fight back, but as crisis after crisis strikes the Hawthorne family, Ethan begins to unlock abilities he never knew he had. And somewhere along the way, the woman who married him out of gratitude falls for him for real.