I may have one. I picked this up while listening to a song I absolutely adore. We're gonna have to tweak a little with his past, but I like the direction it could go in.
Ten years earlier, a thirteen year old Rob met a girl (whom I'll let you name should you choose to go with this plot) while in London and they became extremely good friends. However, after a year of knowing her, she has to leave London, due to unknown circumstances, and therefore leave him behind. One of their last times together was a walk around a park in London. However, after ten years go by and he is loved by girls worldwide, what happens when he re-encounters her while attending an event in Sacramento?
Just a thought.

Song of the Hour (which is where I got the idea): Last Time by Moonlight-Enya.
