Beautiful story! I love that it moved from an introspective character piece to a revelation story--and I love that you made clear that both of them were isolated by their insecurities and vulnerabilities.
The parallels between Superman's warmth--of the sun--and Clark's--like a comfortable sweater--were very well-drawn. I loved the slow process as Lois realized they were one and the same.
The conversation over the phone was very painful; I could just see both of their expressions as they spoke so slowly and tortuously.
And the ending was perfect! I love that she moved to take his glasses and asked if he trusted her. And I love how he asked her what she was doing to him!
Great story! I loved it!