Harry Potter and the Connubialis Hex/The Burrow/Ron and Hermione/Come in her mouth
From Create Your Own Story
He couldn't hold it any longer. Soon enough, he let out a loud moan and came in Hermione's mouth. He rocked his hips slowly as he let go of every single drop of cum before his legs failed him. Hermione had her eyes closed and he could see his load in her open mouth. Laying on his back, he watched her trying to catch her breath. He expected her to spit or swallow, but she did something else that shocked him. She turned her head back towards Ron and kissed him, pushing the cum into his mouth. Harry could see Ron's surprise as Hermione said, "Tastes good doesn't it ? Now you know why I can't get enough of it" Hermione clearly expected Ron to swallow, and after a moment of indecision he did so, looking at Harry as he did. Harry then saw a glimpse of a smile on Hermione's face but it didn't last as Ron was still fucking her.