Give it a go I say… just make sure your friend stays clear of this Forum and especially the AR section!
Tell him to find a hobby or group of mates to distract him whilst she is at work, this will hopefully keep his mind sane and not thinking about what/who she is doing during her shift.
He can focus more on his work or go to the gym and work on himself physically.
Be real about it and if it’s not working out he can always break it off.