You had your ways of showing your love, typically through physical affection- such as kisses, hugs, cuddles.

Ghost had been sitting down at his desk, going through papers. He didn’t mind missions, but he absolutely hated the paperwork aspect of the job.

You hadn’t realized he was in a bad mood when you came up behind him and wrapped your arms around him, resting your chin on his shoulder. He shrugged you off, pulling away. "I'm busy." He mutters, clearly stressed.