“Is it?” Lois snapped, and Clark’s stomach sunk even lower. She leaned so her face was a mere inch from his face and hissed, “Superman.”

this is the worst possible way for her to tell him.
“I have no idea who you are!” Lois announced, throwing her hands into the air.
Now that is just unfair. She knows who he is. A kind, caring individual who loves her. His name is not part of that equation.
all the while you pretended to be someone else, my friend,
Clark:What friend, you hated me then. You wanted to pretend to date me as Clark to be with me as Superman. You were the one who wanted to use me.
Clark:I broke up with you as SM almost as soon as we were partners.
and the person I turned to for comfort when I cried about how you…” She poked his chest with her index finger. “— in that costume, hurt me.”
Clark:I was the one who turned down your very attractive and high pressure attempt to get us to make love.
Clark could say that he had wanted to tell her, many times, but what good would it do?
It can't hurt.
He had tried to be honest about his feelings and that hadn’t worked.
Feelings alone are not everything. Lois has told him this before. That is what she told him in Smallville. He should have really listened.

this just cuts me up.