In a Heartbeat — Tina Wainscott

EACH BEAT OF HER HEART
When Jenna's husband Paul dies in a car wreck, he leaves his desperately ill wife one last gift: his heart. Now, as Paul's heart beats strong within Jenna, something strange is happening. Paul is leading Jenna back to Texas--to a twin brother she never knew he had, and a past he kept secret from her.

BRINGS HER CLOSER TO THE TRUTH Mitch Elliot is a mirror image of Paul--but that can't fully explain the powerful, electrifying feeling Jenna has towards him. Paul's heart is binding her and Mitch in a way that can't be explained--and leading them both to a truth too dark to face.

AND CLOSER TO HIM ...
Torn by two men: Paul, the husband she never really knew, and Mitch, who is shattering all her illusions and awakening her to love --Jenna knows she must follow her heart...at whatever the cost.