Even though they met again in another world, they didn't remember each other. For me, that's an OE. If we went with the script where JL is the only one who remembers LWY, it might have felt like a better ending (for me), but at the same time, it would be way too heartbreaking.
Lol, I think GJM just wants to protect the artists' image. But honestly, most of the dramas he directs rarely have kiss scenes, let alone intimate ones.