His only love sprang from his only hate
Isn't that just like life to mirror something out of Romeo and Juliet? And Benedict Cassidy has good cause to hate Emily Mackenzie's father the corporate pirate stole his company. So what if Emily's pregnant with Ben's child? Or that he can't help loving her? She's still a traitor and the daughter of a traitor. And forgiveness doesn't come easily to Ben.
If Emily hadn't agreed to marry him, he'd have fought the woman for custody once the baby was born. Instead, he's going to watch his wife like a hawk until he's got his business back and his child safely in his arms.