Constant reassurance was what Bokuto always needed in your relationship. Since you were silent and cold, Bokuto was always lacking in attention. So Bokuto had to adjust and keep on believing

just to add to his problems, your relationship was kept private. Not letting the public know and the fact you were quite popular was not helping

But even so, you always treated Bokuto right. Though you can't show it through words, you show it through action and touch

But can that really be enough?