Harry Potter and the Connubialis Hex/The Burrow/Ron and Hermione/Stop
From Create Your Own Story
To her surprise, he took his cock away from Hermione. He stood up beside the bed without taking his eyes off them. They were looking at him with an interrogative look but Ron wouldn't stop for anything at all.
"Is something wrong Harry?" Ron asked.
(Yes, this. THIS is all wrong) Harry thought. But his cock was still hard and he was mesmerized by Ron fucking Hermione. He couldn't get out of the room. The wick was lit and the bomb had to go off. Not getting any answer, his friends' attention got back on what they were doing and acted as if Harry had never been there.