My Best Friend's Brother

**READ THIS FIRST** For crying out loud, I know this book needs editing. I know it doesn't flow right, not everything makes sense. Some things are inaccurate. But take a moment to realize this book is a bit old, please. I was new to writing on Wattpad when I made this book and I truly do want to edit it and make it better. But because it is getting the response it is, I won't touch it. So if it will bother you so badly, please just sit and wait until I make a new version of this book on my profile. Thank you, and good day.
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Madison Maslow and Sierra Schmidt have been the best friends for as long as they can remember. Their brothers both work in the same band, which just gives the girls an excuse to see each other more than enough times in a day. But what Sierra doesn't know is that Madison has had a crush on Kendall for a while now, and that crush could just ruin friendships. What will happen when Kendall starts to get feelings for his sister's best friend? Will a relationship be kept at secret, or will the two be found out before they confess to one another? Most importantly, the age difference? Madison is only seventeen, while Kendall is twenty-two...