Question

Alex and Rachel got married in 2010. Over the years, they have encountered several challenges in their marriage, and their relationship has become strained. In 2019, Alex files for annulment of their marriage based on Rachel's psychological incapacity.

During the proceedings, it was revealed that Alex had been having an extramarital affair with another woman for the past five years. Rachel, devastated by the discovery, then asks the court to declare the marriage void on the ground of Alex's psychological incapacity and his failure to comply with his essential marital obligations.

Discuss the rights and obligations between Alex and Rachel as husband and wife under the Family Code of the Philippines, specifically focusing on Articles 68-73.