Should I get back together with my ex?

I'm really on a crossroads right now. My friends are telling me to move on from my ex but I can't find the will in me to let go of her. We had a really good relationship but it ended abruptly. It was in a steady pace and next thing I know we're over. She said she's tired and I'm not good for her anymore. She said I was toxic and that we're over. Three of years of being together. Three years of loving each other. I really saw a future with her. It wasn't really love at first sight but when I saw her in that singles latin tour, I immediately felt a sense of home in her. I don't know if I should get back together with her or move on for good.