All of their conversations about the Force had really helped him when he returned. Without it, he's not sure he would have made the strides he has. Even so, he'd also forgotten just how readily Luke uses it for everything, and he feels the movement of it before he hears the sound of the boots hitting the floor. Again, a laugh escapes him, muffled into the kiss, as he buries his hand in Luke's hair and ... ruffles it a little.

Often enough, missing him would be like an ache. In a way, it's almost aching now too, though he can't really say why. Maybe just some remnants of the sensation.