Shen Biran will never return to the past, and the trust Shen Biran had in him cannot return to the past either.
Gu Qingyuan was the first to turn around and betray, and it is for this reason that he now feels so guilty.
However, no matter how guilty he feels, Gu Qingyuan cannot return to the past. The only thing he can think of is to make Shen Biran notice him, and then carefully listen to his confession.
Perhaps Shen Biran is still the same as before, but she will no longer give Gu Qingyuan the opportunity she did in the past; she just wants to save Gu Qingyuan, making him think it's possible.
If Gu Qingyuan were not the old Gu Qingyuan, or if Shen Biran were still the old Shen Biran, Gu Qingyuan might have a chance.
But Gu Qingyuan no longer has any chance; no one will give him that opportunity.
Gu Qingyuan thought about changing something, but it was to no avail.
Shen Biran's feelings for him are truly gone, and continuing like this will only cause more pain.
