Dexter Scoop: How Does Deb's Admission Change Everything?

Every season of Dexter has been about its titular serial killer trying really hard to keep his secret. This year, however, it's his sister Deb who has a secret: Not only does she love her brother, but she's in love with him. (As she said, he's the serial killer, and she's more messed-up!) Well, that secret is finally out, so now what comes next?

How will Deb's (Jennifer Carpenter) admission change their dynamic?