Author's Note: I know it has been a long time since I last updated – my apologies. And I am also aware that this is not the next line of the song but this is what I was inspired to write so I figured I'd post it before I was lynched for abandonment.

Be nice to your siblings;

"Remind me why we're doing this?"

"James," Lily paused, stopped brushing her hair and straightened his tie. He had always had a bit of a problem with muggle clothes. "She's my sister."

"Yes, I am well aware of that, dear. But why do we have to invite her to the wedding when she hasn't spoken to you in what? Over a year?" James tugged at the collar of his shirt and felt distinctly uncomfortable. He didn't understand Lily's want to invite her, let alone go round there in person. Couldn't they just post the invite like they had for everyone else? He found his fiancée's eyes in the mirror of the vanity table she was sitting at and watched her internal struggle for nearly a full minute in silence.

"Because...because it's what my Mum would have wanted." James was startled to find tears gathering at the corners of her eyes and took two steps towards her, bridging the gap between them as he wrapped his arms round her waist. "She always hoped we'd patch things up. And, she's my sister, James." She sighed shakily. "I always thought we'd get over this, you know? It would mean the world to me if she came to our wedding." She rolled her eyes and laughed in spite of herself. "I know she probably won't but I have to at least try. She's the only family I have left." She looked up at him and he had to catch his breath; the desire to kiss her was overwhelming with her eyes wide, bright and shiny with a film of tears threatening to fall. He gave her a chaste peck on the lips and ruffled her hair just the way he liked it.

"Okay then, if it's what you want." And he said no more about it. James was less than impressed when, after a brief chat at the Dursley's home, the RSVP came back as a rather blunt 'not attending' along with a door slammed in their faces.

He never forgave Petunia for breaking Lily's heart.

James did, however, give Petunia a kiss on the cheek when he saw her lurking near the doorway of the church in a ridiculously large hat (and husbandless) after his and Lily's wedding ceremony. When he asked her what had changed her mind she had shrugged and replied as though it were obvious.

"She's my sister."

They are the best link to your past and the people most likely to stick with you in the future.

~*~