Harry Potter and the Connubialis Hex/Hogwarts Express/Neville, Luna and Romilda/A quiet ride
From Create Your Own Story
As they all rested, Harry came back to his senses. He did it again. But this time, the guilt was not as strong as the first time. In fact, somehow he felt satisfaction but his main fear was that someone would talk about what happened. He broke the silence.
"Nobody has to know what happened here". Everybody nodded, like he was stating the obvious. Then everybody got dressed. After that, they never mentioned anything about their foursome and they barely spoke to each other. They would talk to students passing in the corridor but that was it. It looked like Harry would get away with it once again.