The Contract (sasusaku AU)

Can love change a person? Sakura Haruno works as a secretary for her boss, Sasuke Uchiha, a ruthless egotist who has no respect for anyone or anything but his own success. Sakura needs a job, so she puts up with his endless demands. Until one day her boss asks her to pretend to be his girlfriend. The new employment contract now says - mistress and fiancée. But how is she supposed to fake love for him when they both hate each other?

You can find this fanfiction here:
https://archiveofourown.org/users/MStoryline/works
https://www.fanfiction.net/~mstoryline