Marcus Grimmie took to Facebook late Sunday night to share the touching news.
Words cannot express… literally I have no words.
Christina was a natural, a gifted talent that comes along so rarely.

Credit: Kevin Winter/Getty Images for Clear Channel
She was taken from us too soon, hewrote on Twitter and FacebookSaturday.
This is yet another senseless act of extreme violence.
I am left stunned and confused how these things can conceivably continue to happen in our world.
Im so blown away by everything right now.
But all I can say is thank you, Marcus continued.
Christina will be missed and never ever forgotten.
See Marcus full post below.