Double Take by Cara Bristol

The second time around is double or nothing…

Getting over the death of her husband has been a long, slow process for pottery artist Faith Hammond. But five years have passed, and she’s making a new life for herself, moving from Earth to planet Terra Nova and opening up a pottery shop. She’s finally finding the calm and focus she’s been seeking.
Until there’s a knock at her cottage door.
Standing there is her very-much-alive husband, Mark.
John Bragg is Mark Hammond’s clone. After the Dark Ops agent dies, Bragg takes his place, assuming all aspects of his life, except for one—his marriage. Faith is deemed off-limits. But in studying his progenitor to impersonate him, Bragg has fallen for the man’s widow.
He resigns himself to unrequited love until he hears Faith is looking to remarry—she has joined the interplanetary matchmaking service, Cosmic Mates.
He can’t bear to lose her again. He goes AWOL from Dark Ops in a last-ditch effort to claim the woman he desperately loves.
But can Bragg convince Faith he’s a clone? And if he can, will she be able to see him as a unique individual—or will he never be more than a dead ringer for her late husband?