Wait out the bad moods
When your partner is in a bad mood, don’t try to fix it, don’t try to help him forget it, and don’t become angry yourself because your partner is in a bad mood. The smartest couples understand that everybody gets in a bad mood sometimes, and it’s just a wave that has to be ridden. Let your partner vent, and for the most part step aside so he can do what he needs to in order to cool off. When the mood has passed, he will see clearly how well you handled it, and respect you for that.