Give him a towel and send him to the shower

"No need to thank me just yet," you say. "I promised you some food and a shower, remember?"

You show him to the bathroom. ""Here's a towel," you say. "There's shampoo and soap in the shower caddy, and a blowdrier under the sink." You make like you're going to head out and give him some privacy. But then he gives you a lustful smile and starts to undress.

Your attempts at playing the helpful host fade quickly. You find yourself rooted to the spot, eyes fixed on his waiflike body. His jeans fall to the floor and your eyes take in a thick, smooth cock already partially hard. He turns around, pretending to ignore you, and you stare longingly at his perfectly smooth, round ass.