Everything about this scene is so important to me. We’ve never seen Sherlock this distressed before, he has tears in his eyes and he is screaming for John. He literally fights his way through a burning fire with his bare hands to pull John out. This is Moriarty holding true to his promise; ‘I will burn the heart out of you.’ Because Moriarty knows that John Watson is his heart. He knows Sherlock will do - and has done - anything and everything for John. How anyone can deny Sherlock’s love for him after S3 is beyond me. I don’t think it’s possible for Sherlock to be any more in love with John than he is at the end of HLV. John is his soul, his every breath, his life... And when John finally has Sherlock in his arms, when they finally let themselves be after all that’s happened, I think Sherlock might break with all his love. And John will be the one that puts him back together.