Harry was tired after the Yule Ball. All he wanted was to go up to his dormitory and sleep. As he crawled through the portrait hole, he heard people arguing. He soon saw that it was Ron and Hermione.
"Next time there's a ball, ask me first, not as a last result!" screamed Hermione tearfully.
"I hate you!" shouted Ron.
"I hate you more!" answered Hermione.
Then, Harry wasn't sure how it happened, but suddenly Hermione was running toward Ron and leaping into his arms. Ron picked her up and they kissed and kissed and kissed.
They've been together ever since.