When what is wrong becomes not right but perfect
Ron knew it was wrong, it wasn't right but to be perfectly honest he couldn't help it. Ron could go all day laughing with Dean, Seamus and Neville or his brothers and checking out the girls that graced Hogwarts with their presence, he listened as everyone told him that he and Hermione were a perfect couple and how content and happy he looked around her and suitably react but deep down he knew that it was act, a lie and for that he hated himself.
Ron knew it was wrong to love watching his best friend getting ready for bed, the little dance Harry he did when wearing nothing more than his boxers and an over-sized baggy t-shirt Harry swirled around kicking up his robes and then catching them in his left hand before throwing them into his trunk. Yes Ron knew it was wrong to love watch his best friend getting ready for bed but he just couldn't help it.
Ron knew it was wrong to sit there and watch Harry concentrating on his potion's essay when he was suppose to be writing the same essay and it was not as if the greasy git Snape wouldn't love any reason at all to give him detention for a week but he didn't care. He loved watching Harry as he concentrated on anything, the way he crooked his head ever so slightly to the right when he didn't understand what he had just read. The way he bit his lip in frustration when he was trying to write something down but couldn't get the wording right. How he absent-mindly ate his fingernails or ruefully ran his hands through his hair; yes all of these traits were so much more enjoyable to observe than writing for that greasy git Snape, he'd be happy to do a week's worth detention over it.
Ron knew it was wrong to be looking at Harry as he flew his firebolt in quidditch practice when he was suppose to be guarding the goalposts but well it wasn't his fault that Harry looked so beautiful when he flew. The slight smile that played across his lip as he glided through the air, the joy and delight in his eyes as he searched for the snitch. No who cared if they lost because he wasn't paying attention, seeing Harry like that made up for the whole Gryffindor house hated him for weeks to come.
Ron knew it was wrong to "accidently" push Harry under the mistletoe with him and than proceed to gently kiss him on the lips before turning on his heel and walking off leaving Harry behind. However that night while at dinner when Harry sat down next to him, took Ron's hand under the table and then to proceed to kiss him to the shock of the school; Ron knew that what was so wrong had become not right but perfect.