The Rock and Water

She laid in her bed, snuggled between her many pillows and his arms. She looked up at him, seeing his eyes crinkle with a smile. She always knew his sincerest smile that way.
"You're like a rock," she stated. He looked at her, a little confused. She continued, "You have your set ways, you're grounded, and you're not changing anytime soon." His confusion slowly turned into understanding and with a grin spread across his face he stated,
"You're right. So I guess that means you're water then."
"How so?" She replied.
"Well, water can wear rocks away. They change them...they affect them." He sighed, "Plus water's a little crazy sometimes." He chuckled as she playfully punched him in the arm.
"We'll do great things then, I mean...look at the Grand Canyon." And with that, she beamed at him.