Dave/Ella: All of Me.

What if Ella refused to sing and Max got voted off instead? What if Ella made it to the hide and seek episode and was there to witness Sky yelling at Dave and breaking his heart? She would break Chris' rules and sing her true feelings to him of course. She risks her own invisibility just so she can sing her beautiful, touching feelings to dave and cheer him up. Dave is touched by the gesture and falls in love with Ella while Sky realizes how badly she blew things with Dave but it was for the best after all she was taken. Since Ella got eliminated for singing, Dave escaped elimination and made it to the final three until Shawn and Sky team up with each other and have Dave voted off. Shawn's revenge for getting Jasmine eliminated and Sky's revenge for betraying their alliance.