Song lyric meaning?

okay, this is one of my favorite songs called “Do me a favor” by Arctic Monkeys, and me and my friends got into a huge fight about the meaning of the lyrics. they said it was about a girl that’s not ready to have sex, others say it’s about a break up, and I said it was really about a girl that’s getting abused by parents/boyfriend at home and came to talk to her friend, even though her friend tries to help her and get her to leave she still goes back to the same situation and keeps getting hurt. I am SOOO positive I’m right! help me out here, guys. what do you think? Here are the lyrics:

Well the morning was complete. There was tears on the steering wheel dripping on the seat, Several hours or several weeks, I’d have the cheek to say they’re equally as bleak!

It’s the beginning of the end, the car went up the hill, And disappeared around the bend, ask anyone they’ll tell you that. It’s these times that it tends, The start to breaking up, to start to fall apart Oh! hold on to your heart.

Do me a favour, unbreak my nose! Do me a favour, tell me to go away! Do me a favour, stop asking questions!

She walked away, well her shoes were untied, And the eyes were all red, You could see that we’ve cried, and I watched and I waited, ‘Till she was inside, forcing a smile and waving goodbye.

Curiousity becomes a heavy load, Too heavy to hold, too heavy to hold. Curiousity becomes a heavy load, Too heavy to hold, will force you to be cold.

And do me a favour, and ask if you need some help! She said, do me a favour and stop flattering yourself! How to tear apart the ties that bind, perhaps fck off, might be too kind, Perhaps fck off, might be too kind