You were something like a friend to Douma. You didn't mind his playful teasing and even teased back. You two spent time together on missions quite often and you started to teach him about emotions and feelings. Soon you managed to kinda revive his emotions, or at least help him in it, allowing him to live a happier and better life with you by his side.

This night you were talking with him about his cult and stuff and he looked much better now that he wasn't fully emotionless.