Thanks guys! :) Nathan misses the little guy a lot, it's always sad when he finds an old piece of aquarium equipment that was for his tank, or the extra food, etc. that he still had in his room. But he had a good end of his life and we are just glad we could provide him with a nice home.
Because of him, nathan is in love with crowntails, and if he ever gets another betta, it will be another crowntail like him. :)