It was more about juxtaposing cold and rumpled sheets with wet pillows warm with wet cheeks.
We expect pain to be cold, empty but it can also be warm and wet.
The truth though is I do not think of poetic devices when I write. I let the words speak to me and if they say what I consider to be true, I put it down.

BTW, I like to use words that tell the thing as it is. I don't really like sanitized words.