As he sits in the frigid cold, he thinks of her and what he should have said. Charlie sits and wonders why he was so afraid. Was she too good for him or was he just overthinking. Now he's sitting alone in the woods.
The silence of the night should be peaceful but it just feeds the thoughts. The thoughts of how he lost her and he can't have her back. As Charlie sits there he thinks of the ways he was to afraid and scared to tell her how he really felt.