Guys, it's okay. It's okay. We don't need to freak out that Bay and Emmett are forever destroyed, because in truth they are FAR from that which is awesome! So I've compiled some news from the unofficial wiki, and the Switched at Birth Spoiler page on tumblr regarding Emmett and Bay in season 3!
Firstly from the unofficial wiki(a) on either Emmett/Bay or the Emmett-Bay page in the 'relationship' section it has not one, not two, but THREE relationships. (The second was in 1x10 The Homecoming when they took a short break) Anyway, this is amazing news!