How couldn't he when before the engagement he received the video of how his fiance was trying to seduce his 'brother'
So he started to think that the person with whom he was getting engaged was not his fiance but some other girl.
And at that moment, he thought of Gu Jin.
Visualizing his fiance as Gu Jin was wrong, but surprisingly, his heart was filled with joy when he thought that the person whom he was going to put a ring on was Gu Jin.
A bright smile appeared on his face. Throughout the engagement ceremony, he imagined his fiance as Gu Jin and at some point, he almost called her Gu Jin.
Fortunately, his best friend helped him.
Later when the ceremony was over, Long Yifan saw the photos of the ceremony and was shocked by the picture taken by one of the photographers.
The picture showed Long Yifan with a rare, genuine smile, his eyes full of warmth and affection.