snuggle (up) against (one)
To lie, curl up to, or press up against one in an intimate, comfortable manner. He snuggled up against me on the park bench, as we watched the sun go down on the horizon. I snuggled up against Tom during the movie to let him know that I wanted to be more than just friends.
snuggle (up) against someone or something
to press or cuddle against someone or something, as if to keep warm. Tiffany snuggled up against Tad and asked him to give her some chewing gum. He snuggled against the warm wall on the other side of the fireplace.