"My heart is so heavy right now," Gomez wrote in the post. "It makes me sick and extremely angry. (I don't mind if there may be retaliation) this is my opinion. It's greed, manipulation and power. There is no heart or thought of anyone else's. No respect for the words my friend has written since she was a 14 year old in her bedroom. You've robbed and crushed one of our best song writers of our time an opportunity to celebrate all of her music with fans and the world."
Looking back at her 13-year friendship with Swift, Gomez went on to call the "Blank Space" star the "most dedicated, fearless, feisty, strongest woman I've ever known."
"People can say bitch," she added, "but what I'm saying to you is that's called a woman with true identity and strength who takes no s--t."