I’m sorry if you lost your Twin Flame. I can’t imagine the pain and grief that you must be going through right now. Physical Separation alone; when you part ways and do not speak to each other already feels like a part of yourself is dead. Now, I can imagine losing him or her forever. Anyway, I am not an expert at reincarnations and the afterlife but I believe from experience that you always feel your Twin Flame with you all the time.
If you deny this aspect of your connection, you feel like you are blocking a part of yourself. All I can say to you is that keep finding happiness in everything that you do. Also, embrace the spiritual nature of your connection. Allow yourself to feel every emotion. Healing is a gradual process — it is not in a straight line either. Love yourself as much as your Twin Flame loves you. Be grateful to have found the greatest love in this lifetime. I wish you love and hope.