Cuddle up phrase
To sit or lie close to someone or something for affection or warmth.
I was so embarrassed when I walked in on them cuddling up to each other.
In the winter, my cat loves cuddling up to the fireplace.
It is so peaceful to cuddle up to the fireplace in the winter like this.
To make a nest inside something.
The verb "cuddle" must be conjugated according to its tense.
The origin of this phrase is not clear.