How about a brother's best friend, but they hate each other now? Just finished this one and I totally binged the last quarter of this book, unable to stop.
This is slowburn, forbidden romance but as they fight their feelings, and then eventually fight to be together. There are dramatic secrets involving each of them are revealed in the same slow burn way the romance is, keeping you so intrigued as to what the truths are.
Such a great read!! I highly recommend it!
https://www.wattpad.com/story/374510173