Scars
Harry traced his hand over the scar on Draco's chest. He had caused the scar himself in his sixth year at Hogwarts when using the Half-Blood Prince's spell. He hadn't meant to hurt Draco that badly but he had let his emotions take over and in a pure act of stupidity the damage was done.
"I'm so sorry, Draco", he whispered trailing a line of kisses down the scar. "I never realised that it hadn't healed."
Draco silently nodded and mumbled "It's O.K."
It was too late. Harry could already see that although the scar was healed the pain would never truly leave his lover and for this he would forever be regretful.