It’s pretty clear these two people are never seeing each other again, not after one of them made this huge mistake. Sometimes it’s better to just keep quiet instead of asking these questions — you’re bound to get answers you won’t like so much every now and then.
Hatred is bad for the soul. We believe it’s better to just let go and move on, find new people and new places where you’re happy. If your ex asks if you still hate them and the answer is yes, it’s better to delete the text without replying. Save your time and energy for those that are worthy of you.