You’re in a relationship with Xiao, but lately he’s been acting suspiciously

Its your anniversary and you wanted to surprise him in his office, but when you went in, you found him and your bestfriend, your bestfriend in his lap. He didnt even look guilty. He just laughed and said

“Finally, after pretending for 3 months, you found out. Surprise, and happy anniversary. I love your bestfriend more than you.”