It is confirmed in Sky's "real talk" video that he once lived with Dawn, but then after the breakup, moved into his own house in Washington before moving to LA.
The maps she did with Sky include The Fountain of Immortality, Island of the Skies, Battle Dome, Run From The Beast, Cops 'n' Robbers, etc.
The Breakup with SkyEdit
On June 15, 2013, Sky announced on Twitter, about he and Dawn's breakup. Dawn closed her YouTube account and all her other social-networking sites as to not receive hate from Sky's fans. However, Sky has also made clear that he is on good terms with Dawn and they are friends.