Henry was used to doing this after people had danced for hours in the club in non-breathable fabrics, so he wasn't a stranger to swamp ass. He knew Iestyn would hate it though, so he tried to ignore that because if he thought too much about it, he was going to lose his goddamn erection and they were going to have to go back to square one.
He ran his hand up Iestyn's thigh, trying to let his husband know this was okay. Well. No it wasn't, but not because of Iestyn's ass. He leaned in slowly, so Iestyn wouldn't feel too snuck up on, and then he circled Iestyn's hole with his tongue gently, before darting it inside in the way he knew Iestyn liked. He kept his hands on Iestyn's thighs, just trying to steady himself.