How to say goodbye to your ex-boyfriend beautifully?

If it were me, I would buy a very high-end lighter and put a card in the gift box. Don't write too many words, maybe just write. I'm leaving. Take care of yourself. That's enough, and then find someone to give it to him when you leave. Lighter means you're not married. If he knows and still loves you, he will show something, but no matter what method he uses, he must take the lead in showing it, so that he will cherish you in the future.