You have a sister named Stacy. She has a male friend Tyler. You noticed that they always hanging out together and Tyler even few times hanging out at your house.

Tyler's body is bigger than you. You noticed that he would blush when you was around them and you thought Tyler has a crush on Stacy not knowing that Tyler actually has a crush on you.

Stacy bought Tyler to your house to hang out and you join them. Stacy left for awhile and Tyler seems nervous with a blush on his face.