Summary: “So on Saturday night, while you are having the time of your life on a date with your hot, hunky, handsome soulmate, I have to go on a date with a rich young master who sounds like a literal stick in the mud whilst pretending to be you?"

Mo Xuanyu's family has set him up on a blind date with a rich young master after learning he is gay. However, he already has plans for that night. Instead of going on the date himself, Mo Xuanyu enlists Wei Wuxian to go as a substitute. Wei Wuxian must act like his best friend for the night before kindly turning down Mo Xuanyu's date.

Only, Wei Wuxian finds out that turning down Mo Xuanyu's date is possibly the hardest thing he has had to do in a long time.

Link: https://archiveofourown.org/works/16294982/chapters/38110400

Note: Modern setting. Very good portrayal of Lan Wangji and Wei Wuxian along with their friends and family in modern times. There are some beautiful plot twists with the perfect blend of humour, angst, drama and romance. It is one of the best modern au I've read.