This song was written about someone, but then expanded to encompass a "type", rather than an individual. Sometimes we can stay in situations that we know are bad for us, or should know that are bad for us, but we have our blinders on.

Lyrics

I loved to give, she loved to take. Oh, what a perfect pair we make.
I couldn't taste the sourness; I was too full on delight.
I laid and listened to your heart, and wondered how my ear got frostbite, because
To behold you and to hold you brought more light and warmth
Than would the dawning of the sun
But beauty shines and lust is blind, it took some time to find the sense to run.

She's a nightmare wrapped inside a dream.
She keeps me warm at night, my beloved ice queen.

A lingering gaze, that adorable smile
Drew me to your oasis to drink for a little while
But the trees give no shade, the pretty lights left the sand laced with shards
I couldn't see a srping nearby, so I clung to a known mirage
From one ailing tree, there hung a single hive
I could hear them sing, their sweet buzzing, so happy and alive
On the surface it seemed so soft and warm
I reached in to taste some honey and was met by an angry swarm
All cats look grey in the dark. A fair face may hide a foul heart
No amount of fire seemed to melt the ice
Can I pass the shame if you fooled me thrice?
Truth be told, you never fooled me once; I was just foolish with what I want

She's a nightmare wrapped inside a dream. 
She keeps me warm at night, my beloved ice queen.

To do the right thing is often the choice that hurts
Whoever said, "the best things in life are free", never held anything of worth
Separating from something so close, it bleeds and it scars
It heals in time, and leaves a reminder of just how fragile we really are
To cut off that part of myself was freeing
And you didn't make it easy to still treat you like a human being
I love you and I care for you, but my heart isn't safe here
You don't understand because you won't understand, but I know I'll thank me later
So now you lie alone, cry alone. If you refuse to change you'll...

She's a nightmare wrapped inside a dream. 
She keeps me warm at night, my beloved ice queen.