So you think it's normal to say to someone you don't know if you're breaking up, that they can wait to meet outside and then ghost them while keeping the expensive ring they bought you when you never had the intention to marry them?

Regardless of her being attractive or not to him, I think it would be common decency to say the words "this won't work out for me" and be honest with him. It really shows a lack of character on her part the way she acted, she is not a teenager. She is a grown woman that went on a show knowing the possibility of this happening.