Okay so spoilers kind of:
I heard that Roxanne and Dion formed an alliance with each other to take down their father. I don't know much of it, but that's the main thing. I'm also like 70% sure the relationship between the two is not romantic. It's more of Dion being deprived of love and attention (the family is twisted and his mom dislikes him) so he saw that Roxanne was capable of feelings (she cried over her brother) so he wants Roxanne to show him love and attention too. I don't think it's necessarily romantic love, Dion just wants at least family love or just any type of care. I really hope thats the case, but I'm only 70% sure.
I STILL NEED A CLEAR EXPLANATION OF THE END OF CHAPTER 29!!!!