I once heard a story about a single man struggling to find a spouse. His main challenge was his insistence that a potential mate permanently welcome his widowed mother into their marital home. A friend suggested that he speak with the great authority, Harav Shlomo Zalman Auerbach zt’l. The man shared with the Rav his delicate predicament. The Rav validated the man’s approach as acceptable. Sometime later, the man met his bashert, the special woman willing to live with his mom. They returned to Rav Shlomo Zalman for his blessing. Surprisingly, the Rav called the man aside and told him that they cannot live with his mother anymore. The young man was shocked. After all, on the previous visit, the Rav had supported his desire to find a woman who would accept their living with his mother.