@HybridGurl omg I am SOOOO SORRY that it took so long to message back, I feel terrible about it. I completely forgot I had this second account!
However, if you're still looking to mix it up, try one family that hates another family, but the other doesn't hate the original. Like Romeo's family hates Juliets, but Juliets doesn't hate Romeo's and just want things to be okay, so perhaps Juliets family attempts to match them together in order for Romeos family to end the fued between them, and Romeo's family agrees to it but only in order to get inside the family and kill everyone basically.
Um.
My mind isnt working so well, so I may come back with another idea once I get more sleep if you don't like that one xD