Yours, Truly by Leonie Slade

Gigi is obsessed with work but now she has a new obsession; Her best friend’s brother.

One night can haunt you…
Gigi Henley is sent off on a last minute business trip to Barcelona, where she encounters a handsome stranger. As she lets her hair down for one night of passion, little does she know, this will start a long and dangerous game of forbidden love.
Nate Dalton is a handsome billionaire, captivated by Gigi at first sight. He is challenged by Gigi, in more ways than one, which sets him on a path to try and overcome his commitment issues and tame that dominant, arrogant persona. After finding out Nate is her best friend’s older brother, Gigi is forced to keep their arrangement a secret. However, with Nate and Gigi being forced around each other in every aspect of life, will it be impossible to keep their desires hidden?