Whats the best way to say goodbye to my ex?

I'm all packed up and ready to leave the home after 2 years together. She's been seeing another guythe last two weeks and thinks he's everything she's ever wanted. I still love her but she's made it clear she doesn't. We said goodbyes through texts just on the chance we wouldn't see eachother again and she was firm but friendly. Saying I could always talk to her about anything other than us.I think shell be home tonight so I'm wondering what the best way to say goodbye forever is? I would love it if it could spark any emotions in her or make her keep thinking of me so that if she does still love me she might come back. Past experience is welcome.