When I walk to the canteen for lunch with Susan and Robert, the first thing I notice is that Caleb is already there, sitting at our usual table near the back. And he's not alone. He's with a girl; but that isn't the thing that makes me stop short. He's not with an Abnegation girl.

The girl is from Erudite.

A blue-clothed girl from Erudite, sitting next to him - in my seat - and he's smiling, they're smiling about something, and then they're smiling at each other. The collision of worlds is so strange I have to look twice, but they're still there, a blue-clothed girl and a grey-clothed boy, something I never even dreamed of.

I'm not the only one who's noticed. Susan and Robert are frowning at them. I am sure my face is going red with anger; Susan must see, because she takes my arm and pulls me away gently to get some food. Am I mistaken, or is there a look of jealousy in her eyes? It must be a trick of the light. Susan does not get jealous.

'Let's sit with them,' Robert suggests quietly. Susan nods, and I follow them. When Caleb sees us, he beckons us over with a wave. The girl gives us a tentative smile that I return just as tentatively. If Caleb likes her, maybe she's nice. Susan evidently doesn't think so; she is frowning slightly.

'Hello,' the girl says. Robert, Susan and I bow our heads; a typical Abnegation greeting meant in respect. Caleb returns the gesture, and I feel strangely relieved. We have all heard the stories of those who abandon their faction's customs in order to impress people from other factions. I never thought Caleb would be the same, and I am glad to see he is not.

'This is Emily,' Caleb says. Susan looks critically at her; a typical Erudite, she has large glasses, short dark cropped hair and brown eyes, and she stands tall.

'Love is in the air,' I grin. Caleb shoots me a warning look, and I stop smiling abruptly. He is telling me that this is not how Abnegation act. Abnegation do not tease each other, or laugh at each other, or make fun of each other; especially not in public. Emily looks flustered.

'No, that's not… we're not, I mean I'm not…'

I smile. 'Don't worry; I know. He's my brother; I'm just messing with you.'

Recognition sparks in her eyes. 'You're Beatrice? Caleb told me about you?'

Caleb winces as I shoot him my best death glare, one that I have seen the Dauntless using many times. Rearranging my features into a pleasant mask, I look at Emily again. 'Good things, I hope,' I say, keeping my voice light.

She grins. 'Yes - mostly.'

'So…' I try to find a way of asking the only question on my mind without seeming too rude. 'So… what's with the two of you?' I gesture to her and Caleb, sitting a little too close together considering that they are from two rival factions. Susan still looks unhappy; Robert just seems worried.

'No, we're not… we just met in Advanced Science class. We have to share revision notes,' Emily explains. 'We don't…'

I nod. We spend the rest of our meal in silence as is typical of most Abnegation. Emily looks slightly awkward, but I am not selfless enough to try and break the silence and start a conversation. Emily is an Erudite, and we have been taught since we were young to be wary of the Erudite.

When the meal finishes, Emily jumps up, looking a little too eager to get going. As Abnegation, it is custom for us to wait for each other; Emily waits with us, but it is obvious that she is only really waiting for Caleb.

I spend all of my afternoon classes thinking about them. Caleb, my selfless Abnegation brother, with an Erudite, someone from the worst faction of all. Erudite are arrogant know-it-alls; what does he see in her? They are the faction our father has told us not to associate with, let alone eat lunch with. Emily insists nothing is going on between them, but I don't really trust either of them; I've seen the way they look at each other.

And Susan seemed genuinely jealous. I have never seen her like that before, in all the years I've known her. Does she really like Caleb? How long has it taken me to notice that? We have known each other's families for as long as I can remember, and many have assumed that I would marry Robert when I was older, and Susan and Caleb would end up together as well. But did I really believe these rumours? Did any of us?

I walk home with Susan and Robert in near silence; Caleb is nowhere to be seen. He is not at the school gates like he usually is, and none of the other Abnegation have seen him. Eventually Susan decides that he can find his own way home; we have better things to do than wait for him. I know she is still angry with Caleb; I am, too, though I don't know whether or not I would admit it.

After saying goodbye to Robert and Susan, I walk into an empty house. Too late, I remember that my parents are at a government meeting and will not be back for hours. I remember my parents telling me to take Caleb to Millennium Park or another nice place, as the weather is getting warmer.

Instead, I start to prepare dinner.

When Caleb walks through the door, almost two hours later, I turn around and hold his barely apologetic gaze. He is the one to look away first, dropping his schoolbag on the floor with a heavy thud.

'Where have you been?' I ask quietly, not bothering to disguise my anger, irrational though it is.

'Out,' he replies casually.

'Out?' I repeat disbelievingly. 'Just out?'

'Yes,' he says calmly. 'Just out.'

'It was your turn to prepare dinner!' I say angrily, though we both know that isn't really what I'm angry at. We often switch turns to prepare meals; behind our parents' backs, though, as we know they wouldn't like it.

He winces. 'Damn, I forgot about that. I am so sorry,' he says sincerely, and I almost believe him. 'I was out, alright?'

'For two hours.' Then I realise. 'You were with Emily, weren't you?'

He says nothing, but the look on his face is enough. 'God knows what you were doing; I don't even want to know,' I add as Caleb opens his mouth. 'She's an Erudite, Caleb. Nothing good can come out of this, whether you're in love or not.' I throw the last part in casually, but of course he notices.

'It's platonic,' he says. I frown questioningly, and he explains. 'Not romantic or sexual.'

'Stop with all the long words,' I say. 'You're beginning to act like an Erudite.' It is meant to hurt him, and it does; I don't apologise. I don't want to apologise. It's also true; I have never known or heard of an Abnegation spending time with an Erudite, especially voluntarily, and using words like Caleb does.

'Look, I'll take over the dinner, okay?'

'No, it's okay. You can do it tomorrow.'

'Thank you,' he says, more out of politeness than anything else. 'I'll… I'll just get on and do my homework.' I raise my eyebrows again; I didn't get any homework today, and he adds, 'Advanced classes. Lots to catch up on.'

Maybe he expects me to say something. I don't; I just continue chopping vegetables, listening to his footsteps fading away up the stairs. I hear the heavy thud of him setting down his bag again and wonder how many books the Advanced classes need.

Taking deep breaths to calm myself, I turn back to the stove.

A/N: Another update! I'm getting better at this updating thing! It's awesome that so many of you got the Sherlock reference :) Thank you for your reviews and faves, and also all of the ideas for Emily. I don't think I'll do an Emily POV just yet, though it's not completely out of the question.

Which is your favourite chapter so far? I think my best-written one is chapter 14 (Eric: Rankings) but I haven't really decided on a favourite. I would love to know what you think!

Also, if funny things happen to the first three chapters, I'm sorry; I'm going to completely change them. To be frank, I think my writing style then was utter crap. It was too fragmented and just kind of weird; I don't like it at all. I think it started picking up by chapter 4-5, and to be honest I think it's getting much better. What do you think?

Last thing - I would love to see what you think! Was it too obvious that Beatrice and Caleb didn't fit in Abnegation? Whose POV should I do next? Could anything have been done better? Bye :)