His name is Xander, he's your older brothers best friend, you both were ok with one another

It was late at night, your brother was out and your parents were out of town, only you and Xander were home. You went downstairs to get your computer and the lights were off so you missed a step, fell down the stairs, twisted your ankle and hit your head on a shelf, you were disoriented. But what you didn't know was Xander was downstairs and shirtless...