The thing is, no one knows. And there isn't even a hint. 1 chapter you'd think its the red haired dude, then you'll think its the curly haired one. And that's y its frustrating. I'd suggest you wait for it to end before reading. It'll save you from the stress. Protect your scalp.
I've just started reading, can someone please tell me who he's probably going to end up with bc I don't want to get attached too easily thanks