I find it interesting that Haley ridicules the dominant role that Jake takes in their sex life, when that is EXACTLY what she wants.
I think that's kind of an oversimplifcation of the issue. It's not that she has a problem with him trying to take a "dominant" role, it's that (no pun intended) that's only part of the package.
The Player Character is her counterpart in more ways than one. When she's wild, he tends to be more restrained. When she's down, he cheers her up. He's supportive when she needs it, and likewise, she does the same for him. Her relationship with Jack (at least from what we've seen) doesn't have these same layers. So, yes, he finds his "sex talk" ridiculous, but that's largely because it's not backed up by the other things she'd want out of a relationship.
The PC busts her chops all the time, and as a result she kind of thinks of him as a "worthy opponent." Their relationship is affectionate, caring, but also filled with constant moments of verbal sniping and it's rare when either one of them address the other with a sentiment other than sarcasm.
But that's the thing. Haley
likes it that way. She comes across to me as someone who needs to have someone to keep her grounded. Someone to balance her, but someone who can also "keep up" with her. As in, someone who can take her bullshit and throw it right back. And, well, yeah, Jack does none of that. He comes across as a little needy, expecting her to show up for him, but all he gives back is porn-esque dialogue when they're in the bedroom. Not a solid foundation for a long-term relationship, and she's realizing that.