Is this correct and natural?

"Will you marry me," he asked his eyes shining with anticipation.

"Oh! Put the ring back in the box please. Have you even through this through?", she scolded.

"I saw it coming but I had to do it anyway," he said looking away from her. He got back on his feet. "What a waster of my day," he said, sighing. "At least tell me why."

"If I say yes, you will take me for granted, and I will get old," she said.

"You will never get old, you can't get old for me," he answered.

She eased him towards her lips and gave her a kiss on the cheek. "Honey, everything gets old. Even me."