Rose will loosen up and get a bit more adventurous sexually. She's certainly not a prude, but she's repressed that side of herself for so long to keep it under control that it's hard yet, for her to let loose.

Well, she did see it a bit on the dance floor that one night. I think the only thing that will bring out that darkness in him is if someone threatens her safety. I think by the time that happens, she'll be so firmly attached to him that it won't matter. And Rose, as ever, will be the one to get him to stop.