My brother purchased a copy of GTA:V for himself on a Steam sale. I would like to play it, but it's not allowing me to, even using Steam Family Sharing due to Social Club's restrictions. Can I play the game without purchasing another copy for myself somehow? I just want to play the single-player storyline and free-roam around the city. I don't mind if I have to keep separate save files or something, I just want to play the single-player mode.