Katherine smiled at Jack . Never in her life did she think Jack would love something so much . Jack bounced the baby in his arms up and down . "He likes you " Katherine said placing a hand on his shoulder "yeah he does " Jack said . "Katherine? Why did Davey and Clara leave their son to us ?" "Because they knew you would make a great father . Your an amazing uncle and brother to those boys now you can be a father to him " "Katherine do you think he knows I'm not his dad " "his blood does but not his heart . Jack . Benjamin loves you . If you were or weren't going to be his father " "Katherine do you think we're ready ? We were given this baby because our best friends died !" "Jack , Davey is up there and he's with Clara , and their smiling down at you . They knew we would make great parents . Even if Benny isn't ours . " "I love you Kath , and I love you Benjamin " "I love you too and he loves you Jack " Katherine said kissing his cheek. "Look , he's smiling at you " Katherine said . "He smiles like Davey , and his his eyes " "and Clara's hair and nose " "So we're gonna adopt him official?" Katherine said . "Of course. Benjamin David Jacobs Kelly " and kissed her new son on the forehead .