Multiple versions of this movie??

I've watched the version on Amazon digital but I've also seen a clip of the end with a different monologue than that on the official film from Amazon. Are there multiple versions? The one I saw actually shows what she wrote in the notebook at the end.

“Your life didn’t matter to you, but it mattered to me. I tried so hard to keep you from getting underneath my skin that I never stopped to see that it was me underneath your skin all the time. I killed you a little bit every day. I understand now what happens when you don’t give love to someone who needs it; eventually, they die.”