Broke up with her boyfriend and was ridiculed by her ex-boyfriend. She always thought she was beautiful and smart. She was jealous of me and hated me. What should I do?

Don't care too much about what others think. Love does not have so many conditions, and true love is not a choice after weighing the pros and cons. Your boyfriend loves you now, which means you are loved now. She may not be on good terms now, and it's normal to be a little jealous of you. You won't spend the rest of your life with her. It doesn't matter what she thinks of you. Living your own life is the most important thing.