Title taken from lyrics in the song "Can you Feel the Love Tonight" from The Lion King.
Sherlock has no idea he has any feelings whatsoever for Molly, even when he is clearly affectionate with her, And Molly truly believes the same thing. However, by the end of season 4, I am pretty convinced he actually does.
This pic does not depict something that would actually be in character for him, it's just supposed to display how oblivious they both are.