Marcel or Harry?

Selena Gomez was a normal teenage girl, living in a lovely area called, Holmes Chapel. Now a senior in high school, she tries to make the best of the year with the man of her dreams, the love of her life, the 'school's heartthrob'. Her boyfriend, Harry Styles. Hiding behind the two lovebirds is the opposite twin brother of Harry's, Marcel Styles, mostly known as the pathetic, geek of the whole school. With the two lovebirds, and close friends of theirs, they'll nothing to stop from living the year of their lives, and to make their times in high school last. Everything goes fine until one night, when Harry makes one mistake that'll change everything. What happens when Harry and Selena are on the rocks? Will something spark between Marcel and Selena? Will Harlena be saved or will it be the beginning of a new chapter for 'Marlena'? Who will Selena choose? Marcel or Harry?