He may be capable of more (Estelle, Victorian Wife), but it's pure fanfiction that he'd be having that kind of relationship with either of those people, at least based on what actually happened on screen, rather than the Blog and the fanfic writers minds. (And I'm willing to apply that to ANY TW ship. Those were all shag, but there's should have been more of them. Make it clear that he fucked Susie and Owen as well.)

What some people railed against in CoE was actually evidence that the real!Jack believers were right all along.