platonicteamugs:

From Wikipedia:

Nevertheless, Holmes’s friendship with Watson is his most significant relationship. In several stories, Holmes’s fondness for Watson—often hidden beneath his cold, intellectual exterior—is revealed. For instance, in “The Adventure of the Three Garridebs”, Watson is wounded in a confrontation with a villain; although the bullet wound proves to be “quite superficial”, Watson is moved by Holmes’s reaction:

“It was worth a wound; it was worth many wounds; to know the depth of loyalty and love which lay behind that cold mask. The clear, hard eyes were dimmed for a moment, and the firm lips were shaking. For the one and only time I caught a glimpse of a great heart as well as of a great brain. All my years of humble but single-minded service culminated in that moment of revelation.”