Why Do Twin Flames Separate?

A twin flame with a dominant Divine Masculine energy tends to be the runner and the Feminine energy is dominant in the chasing partner.
The chasing twin flame must learn to heal their Masculine energy to balance it with the dominant feminine energy and the runner must learn to embrace their feminine energies.
Divine feminine tend to be more expressive of their emotions and feelings. That is why it is easier for them to easily research and find the answers to the Twin Flame Awakening Journey. The running twin flame is very covert - non-expressive and unresponsive because they put up an inner resistance to feeling the turbulent connection.
In essence, the runner twin flame has to learn to open themselves up unconditionally to feeling the vulnerability that comes with the connection. They must travel within themselves to confront the core wounding and issues that block them from feeling a harmonious balance.
The chaser twin flame is also afraid of confronting their insecurities and demons thinking that a twin flame partner will save them from themselves.
Both twin flames must learn to confront themselves and their demons during the running and chasing phase to embrace the new changes after Awakening.
Inner Union first happens within both twin flames to harmoniously manifest in the physical reality.
I hope this helps. Stay Blessed!