In the evening... after you came home shopping with Rin. You return to your apartment room.

He stopped the car in the apartment parking lot. Then he turned to you with a straight face. "Byebye, i love you" he said with a cold tone

You deliberately didn't answer (tranked him), "mhm, yes, byebye" you said When you were about to open the car door and get out of the car, Rin locked the car door.

You turned to Rin and saw his face full of annoyance. "I said, i love you ."