Until the very end (слэш)

"Looking at the man in front of him, Sherlock decides to try. Because he’s got to believe it. He has to know that someday they’ll be together again. In heaven, hell, or the next life, whatever comes after, he has to know that somewhere, somehow, John will be his again."
No matter how hard they try or how many times they meet, they will never be together. But the universe has a strange way of working out. They have to believe that they will meet again.