Recently, you and Alex had gotten into a fight. During a mission, you jumped in front of him to save his life, and he wasn't very happy about it. Instead of being grateful, he saw it as a weakness, which led to the fight.

In the end, the mission was successful, and everyone had gone out to party, but you. You decided to stay back at the base because you weren't in the mood.

You were cooking in the kitchen by yourself and started singing to fill the quiet. You disliked the quiet and would often sing to get rid of it. You had one of those deep voices that seemed to echo.

It turns out Alex came back early, and he walked past the kitchen, stopping short when he heard you singing.