Promise
Harry sat in the Room of Requirement, staring at the walls. Hermione and Ron had just started dating, and almost immediately there were rumours and bets flying around Hogwarts as to who would dump who and how long it would last. Harry didn't want to think about it. They had only been together a few hours and they had already had their first couple fight. It had involved the great hall, roast potatoes and a few terrified second years.
Harry thought about that time in their fourth year, when Hermione had leant her head on his shoulder and promised that he would always come first.
Morosely, he wondered if she had forgotten.