He didn't move as Ioan approached. His curiosity had gotten the better of him and he wanted to know. He supposed it would be a revelation of Ioan's true character. After all, Taff was naked, wandless, in the most vulnerable position possible. Ioan could do anything he wanted.
But of course Taff knew what he wanted, and so when Ioan's hand reached around his neck and his lips met Constantine's, there was no resistance. He kissed Ioan back with equal passion, as if there was some long seeded passion between the two of them.
And when Ioan stepped back, Constantine didn't let him go far. He hooked a finger in the waistband of his jeans and pulled him back, dropping his towel to wrap his hands around Ioan's waist. He no longer knew where he stood or how he'd gotten there. That wasn't important. It was this, this build up, that now dominated his world.