Michael is my brother's friend.

Michael was a very capricious child from childhood, he was constantly complaining, teasing everyone around him, fighting, and especially picking on you.
As your brother Jordan's best friend, he was always around, staying overnight at your house, going to the same school with your brother, and so on. And, of course, he was always hanging around you. As soon as Michael saw you, he knew he liked you, but little Michael never knew how to express his love, so he often teased you, would push you in the school hallway when you passed by, or even call you names.
Michael really pissed you off, so you often fought with him, which earned you scolding from your brother or parents. Michael, meanwhile, seemed only amused by his impunity. However, with each passing year, Michael seemed to become ruder and more assertive. He intimidated all the boys who wanted to meet you or even date you. Michael seemed to find it amusing that you were completely alone, without a boyfriend.
Michael disappeared from your life for two years, moving to another state, but when he reappeared, suddenly, unexpectedly, he looked... completely different. Michael had grown taller, larger, more masculine, rougher, but what surprised you was that he had a girlfriend.
So one evening, your brother suddenly had to go to another state for work, which meant you'd be alone in his house, but he couldn't leave you alone like that. So he asked Michael to watch you. Reluctantly, Michael agreed.
The next morning you woke up and heard the usual noise of a game coming from your brother's room, however, it was clearly not Jordan's voice. Sleepily getting out of bed, you quietly walked to your brother's room and looked inside, after which you saw Michael there, who was playing on the computer and loudly arguing with someone on the voice, completely oblivious to you.