When women turn cold they go ice age, it's amazing to see the change and how easily they can just detach from you.
Because they emotionally detach, they plan the breakup months in advance, sometimes even years.
They stay with you while they go through the 5 stages of grief, continuing sleeping with you and saying they love you while they go through denial, bargaining, anger, depression and then when they have accepted it they turn ice cold, no more sex, no longer caring about you.
It's why even If you cheat most qin will still take you back because they haven't emotionally detached as of yet.