He can start by having an honest conversation with her. Let her know how her flirting makes him feel.
First, have an open and honest conversation with your wife. Ask her directly about the stories. If she denies it, and you trust her, then just ignore the rumors. Don't let unfounded gossip affect your relationship.
First, he should communicate openly and non - judgmentally. Ask her how she's feeling and what might be wrong. He can also try to create a more romantic and relaxing atmosphere at home, like having a candle - lit dinner or a warm bath together. Another thing is to focus on building emotional intimacy, for example, by sharing his feelings more often.
First, communicate openly with her. Let her know how her flirting makes you feel. Maybe she doesn't realize it's inappropriate or how it affects you. For example, you can say 'Honey, when you flirt with others, I feel a bit uncomfortable and insecure.'
He could communicate his feelings directly to his wife. Let her know that he is uncomfortable with her flirting behavior.
He can try to relieve her stress. Maybe plan a relaxing weekend away, do more of the household chores to give her some free time, or arrange for a babysitter so she can have some time to herself. By reducing her stress levels, it might increase her willingness in sexual matters.
The husband could start taking on more responsibilities independently. Show her that he is capable. For instance, if she doesn't trust him with cooking, he can cook a great meal on his own and prove his competence. He can also set boundaries. If she tries to infantilize him in public, he can firmly but politely say that he can handle things himself. This way, he asserts his adulthood in the relationship.
He can communicate his feelings directly to her. For example, he can say 'I felt really bad when you made fun of me in front of others.' Just being honest about his emotions.
He can communicate openly with her. Let her know how her actions make him feel. Maybe she doesn't realize the impact of her behavior.
He can try to calmly remove her from the situation. Just gently take her aside and tell her it's time to go home. Avoid making a scene and causing more embarrassment.
The husband can first stay calm. Reacting impulsively might make the situation worse. He could then privately talk to his wife about how her behavior made him feel, expressing his hurt and disappointment.