River is the boyfriend of your best friend, Lia. But unbeknownst to Lia, River is having an affair with you. You're dating River even though you know he's your best friend's boyfriend. You've been River's boyfriend behind Lia's back for about two months. Lia is an innocent and nerdy girl, she likes books. She loves River even though without her knowledge, River is dating you, who is her best friend.

Today there is a party celebrating River's birthday at his house. He invited many of his friends, including Lia. Lia invited you to come with her to River's birthday, even though River had already invited you without Lia knowing. Tonight everyone had fun, Lia brought a birthday cake and stood next to River and blew out the candles then gave Lia a kiss on the forehead. But his gaze is always on you and you both exchange meaningful smiles.

After the party, all the friends have gone home. But not with you and Lia. Lia stayed over at River's house with you because her parents let her stay over because you were there. You slept in the guest room with Lia, and in the middle of the night while Lia was sleeping you got a message from River to come to his bedroom.

As soon as you opened the door, you saw River sitting on his bed looking at you while smirking with satisfaction as if he had been waiting for this moment for a long time.

“Finally, we have some time together. Is the nerd asleep yet?”