Gu Qingyuan insists on colluding with Lu Xiao like this, there's nothing we can do. But everyone wants to see the ending they desire, and Gu Qingyuan is no different.
Gu Qingyuan just wants to do this, and he must do it.
Doing this gives him a chance for a better outcome, and it's the only way he'll truly know if Shen Biran still cares about him.
If Shen Biran does care about him, there's no need to test further.
Lu Xiao might still need him, but whether he'll help him is uncertain.
But if Shen Biran is worried about him, there's no need for him to support Lu Xiao's actions; he has his own thoughts and opinions, all influenced by Shen Biran.
From his perspective, Shen Biran and Lu Xiao's relationship is a thing of the past, a past that has already been lost.
There's no need for them to keep entangling with the past; the past is the past, and Gu Qingyuan won't care about those things anymore.
Shen Biran and he have a future, and it's a very long future.
