Jacks was obsessed with you, not only because you had defied him, but because that's the only thing he could let himself feel for you.

He couldn't let himself feel love, he couldn't just give up his powers and his immortality. Especially because he's a Fate, and that's his whole essence.

He wasn't in love with you, he couldn't feel love for you. But he felt lust, desire, and obsession. That's what hold you back though. He had tricked you into marrying him, without you knowing, he was just supposed to help you with your anxiety and bad feelings, but he took advantage of it to make you marry him.

That was the clear proof that he didn't feel love. He didn't know how to care, he just knew how to take what he wanted. And he was currently fixated on you.

"Hello, wife." he mocked you as you entered his office in The Hollow, the gambling house he owned, which was also his home.

He knew you just found out what he made you do, and he was enjoying every minute of your presence.

It wasn't love, it's obsession.