Benjamin and Richard went to university together—Richard is one of four kids but he's eight years younger than his only brother, and they were never all that close growing up, so it's Benjamin he turns to to be his best man. Katie thinks it over for a long time, and Richard promises he won't be offended if he chooses a witch or anything. It's not his opinion she's really worried about, though.
Because from the outside they looked close, Katie and Alicia and Angelina, and even farther away even people who didn't know how close friends they were just saw them as teammates. Confound the rules of Quidditch and the need for three Chasers—and yet, there is nothing about their friendship she can regret.
Thankfully, Angelina has already been down this road. "Going insane yet?"
"Er. Sorry. Am I that out of it?"
"No, I mean with the wedding preparations and all. Nearly lost it myself."
"Oh. Well, it's still quite tricky, I'm trying to...never mind that. I think it'll be fine, I've found a nice dress that's not too expensive."
"Oh. That's good. George and I were so busy working out who to invite for what..." Katie had wound up being the sole bridesmaid after all.
"We haven't settled that either," Katie says, and they both laugh. "Were you expecting me to reciprocate?"
"Ressiwhat now?"
"Er, to be my bridesmaid?"
"I wasn't expecting anything! Merlin, Katie, it's your wedding, and Richard's, invite whoever you feel like."
A shadow crosses Katie's mouth.
"Alicia?"
"I just can't tell, she's so hard to read sometimes."
"You two were always closer. Might as well venture it."
She does, and Alicia—this time around—accepts. Richard is charmed by her and her nonchalant confidence that she could turn him into a newt, and she feels at ease among Muggles—surprisingly, Angelina thinks, for someone who grew up in a magical household. But then comes the wedding a Muggle one, and there are Benjamin and Alicia. A friend of the groom's and a friend of the bride's, no one expects them to be anything more, there are some things that just can't be done. Muggles understand. And Angelina is happy for her friends.