At the end of the bond air deduction, Sherlock looked up to see John’s reaction first, not Irene’s. Whether Irene was a love interest or not, Sherlock cared more about John.
And I do love John’s dumbfounded face.
and all john can think is how fucked he is because sherlock really does love her after all.
"I am dismissive of the virtuous, unaware of the beautiful, and uncomprehending in the face of the happy."
based on this