Symphony

'"John," he said in a slightly strangled voice. "I just wanted to tell you that-" he breathed deeply. "That the depth of what I feel for you frightens me."' It is medically proven that hearts can break. John would know, since he's a doctor. But if Sherlock has taught him anything at all,it is that they can be mended just as well. John would know, since he's in love. (smut.)