Well, I really hope all these time travel/Davina being Klaus's daughter turns out to be just theory.... I would hate that! Seriously hate it. Time traveling is a subject that wasn't ever mentioned in their universe, and to add such a thing now would be like opening a can of worms.
As for romances on the show, I agree with Babi, they should focus more on the family and the taking over NOLA plans (which is way more interesting) instead of making the characters find a love interest. Sure in with time that's bound to happen, but I wouldn't like it taking over the storylines.
Also, eww for pairing Davina up with any of the characters so far.... it's kinda creepy.