Everybody is staring at us in amazement. It looks like practically the whole of Grade 10 is gathered around us. They’re whispering and pointing, and looking from Amanda to me and back again.

Amanda’s boyfriend, Connor, is staring at us like we’ve got horns sprouting from our foreheads.

  “Your sister?” he says disbelievingly. “How can Latoya be your sister? I mean, look at her. She’s… she’s…”

“Black,” I say helpfully. “And Amanda’s white. Yes, we did notice that, thanks.”

He shakes his head angrily. “It’s not just that. You’re so completely different. You’re nothing like each other.”

“Yes, they are,” a voice says from the crowd of learners.

I turn around in amazement. It’s Refilwe, my least favourite person at school. She’s an airhead and a boyfriend-stealer, and one of the most popular girls in school. Don’t tell me she’s going to stand up for us.

“I knew there was something odd about you two,” she says, coming to stand right in front of us. “I knew there was something wrong with your friendship. I mean, one moment you couldn’t stand each other, and the next you were best buddies. I knew it was fishy.”

“It’s not fishy, Refilwe,” I say patiently. “We didn’t know we were sisters at first either. We only found out about it recently.”

“Wait till I tell Jayden Depaul about this,” she says with a smirk. “I wonder if he’ll still want to hang out with you when he knows you tricked him like this.”

I can’t help flicking a glance at Amanda, who gives me a tiny smile.

“Jayden knows all about it,” I tell Refilwe. “He figured it out from the very beginning. Unlike Connor here, he could immediately see what we’ve got in common.”

“But how did you… how…?” Connor’s mouth is hanging open like he’s catching flies.

“We have the same dad,” Amanda answers shortly. “And different moms. It was just one of those things.”

The whispering starts up again. This is exactly why we waited so long before telling everyone – because it puts our father in a bad light. First of all because he hooked up with my mom while his wife was pregnant with Amanda, and secondly because he didn’t take responsibility for me, except for paying my school fees. That’s all changed now, but Amanda and I still try to protect him.

“Well,” says Connor at last. “I still don’t see what the big deal is.”

WHAT DO YOU THINK?  Does Latoya and Amanda’s dad deserve to be protected by his daughters, or should he be made to face the gossip that comes from cheating on his wife?