Source of energy

"What are the levels of a relationship Alex?" she asked him innocently as this was the first time she had ever heard something like this! She had no idea how this level worked but then her eyes gleamed as she wondered where she had heard the level word last time. she nodded her head as she remembered how much she had enjoyed that day.

"Is it like super mario that we played the other day?" she asked with a bright smile, that was her last happy memory with him. After that the call came and they have been here since then. 

At that thought her eyes dimmed a bit yet the sparkle in them was still enough to blind Alex. Alex did not know how to explain to her the meaning behind levels and he had never thought that she would link it with a video game.