The Importance of an Adequate Data Collection

“Back then, I asked you what your last words would be if you knew you were dying. You said you didn’t have to use your imagination, and I … I understand now. I was going to die and all I could think of was that I would never know the feeling of your lips on mine."

What if Sherlock, after getting shot and thinking he is going to die, thinks of everything he could never tell John, never share with him? (And what if that leads to a fluffy confession *coughcough*)