Think about Hamilton’s grief during Tomorrow There’ll Be More Of Us. He’s quiet and much more soft-spoken than usual, but you can still feel his heartbreak. At the beginning of Non-Stop, you can even see him wipe away a tear.
Now consider the fact that Hamilton and Laurens could have been lovers. Some of Hamilton’s letters to Laurens were just as flirty as his letters to women, if not even more flirty. He was openly affectionate with Laurens in his letters, and at one point told him that he had stolen his heart.
Now imagine the soul-crushing grief Hamilton went through, and how much more horrible it would have been for him if he and Laurens had been lovers at some point.
What could he say? Nothing.
What could he do? Nothing.
This is why Lams is so sad. Right here.