This popped into my head as I was listening to 'The Man Who Can't Be Moved' By The Script so this is kind on a song fic. So Here we go.
Castle was sitting in his study looking over old newspapers of different events he had been in. He had been sitting in his chair in his study for at least 12 days. 12 days since he had seen Detective Kate Beckett walk away arm in arm with that that stupid tall, handsome, stupid Doctor Motorcycle Boy. That's when he went in to see Roy Montgomery to tell him he had all the research he needed.
The only thing was he hurt in his chest constantly it would just ache all the time even when he was with his mother or daughter even when he was down at The Old Haunt with the guys.
He sighed as he flipped to the next article and froze. He's eyes widened and the mouth fell open. He could not believe it. Kate Beckett, THE Kate Beckett was lining up in a, well he didn't want to brag but, a really long line looking beautiful as ever and he even noted she looked nerves. He looked down at the date of the picture and he saw it was 5 years ago so only 2 years before he started following her around. He could not believe this.
As he looked closer at the picture he released it was the book store not far from his or Beckett's places. He folded the old newspaper and slipped it into his pocket. Grabbing his phone a jacket and his IPod he left his apartment.