John's choice - 'Amy's Choice' Last scene

Amy's choice - but with Sherlock and John instead of Amy and Rory. The last scene, where Sherlock finds out how the first dream stopped because someone drove a van into a house. But why doesn't he remember that? What were John's motives? Romance, John/Sherlock, Johnlock, no established relationship. Contains some of the original script, but mainly own lines. Now with epilogue!