The New Orleans Pelicans forward tragically found Gia's body on Monday and called 911.
"I'm deeply grateful for all the love and support we have received from family, friends and fans," says Anderson. "Gia was the most beautiful person I knew inside and out and she always smiled and made everyone else around her smile."
"She had such an amazing impact on my life and anyone that knew her was blessed. All I have left is to cherish those memories we made together and help perpetuate the many values, faith and love that we shared."
The ex-Bachelor and Bachelor Pad contestant was taken to the hospital after Ryan phoned authorities and placed in critical condition.
She was then removed today from life support.