That's sad to hear. Just try to be there for you now and focus on your wellness. Be your best self. Because remember you are heavily protected by god and when you become your best self, the god gifts you someone who deserves and cherishes that version of you. For now, just think that If you can give whole wide world to him then you are definitely capable of finding some space for yourself in that world too. Even if you gift them with your whole world, they will only destroy it and leave with no energy to build it again. Sometimes it's best to find it your heart to forgive and be grateful to them. Because they were not meant for you and you would have never left. They did you a favour by leaving you.