From what I have experienced and loved being on the twin flame journey for over 6 years now, I believe that twin flames (Romantic) can stay together permanently and harmoniously because nothing can deter what is naturally meant to be. If you have also met your twin flame and gazed into their eyes (Soul) your feelings are enough to alert you that your encounter was not a coincidence. God/the Universe/Angels and all your Spirit Guides conspired to bring you two together. Have you noticed how a twin flame walks into your life when you least desire or expect it? Maybe you are going through a rough life situation and nothing seems to be working for you. The moment when you need a shift in perspective to make exponential changes in your life. For others, a twin flame appears when you are in desperate need of Spiritual awakening and healing. Maybe you are on a soul-searching journey but you have no idea how to have a breakthrough. When you feel stuck in life. For most, a twin flame finds you when you need to find yourself. Your center. When you feel lost to yourself. Whenever physical separation happens, all you think about is what just happened between you. Every moment of the day in whatever you do, you feel your twin flame energy merging with yours constantly. It can take years for your reunion to happen and whenever it does, you both don't want to relive the pain and emotional desolation of being away from each other. You do whatever is possible not to repeat past mistakes. Separation only makes your bond stronger with a twin flame. You are two hearts, one soul. You crave each other equally. Twin flames make the most beautiful romantic couples because their connection, light, and energy vibrations heal those around them. Twin flame love is infectious. It's effortless. It is unconditional. I hope this helps. Stay Blessed!