& i told him: "Our relationship is just like being diagnosed with cancer, even we can spend the best time out of it, we knew we don't have much time left together. When it is the time to leave, everyone must just let go." 

& from now, we are starting to count down our remaining time together. 

Deep from my heart, it's still the very first answer "Perhaps W is the reflection of M."
Indeed W for William, M for Mae.