You shouldn't keep things from your partner.
Bobby and Grace are getting married and Bobby has $50,000 in debt that he has not told Grace about.
Bobby wants to have a nice wedding day with Grace.
Bobby tells Grace about his debt before their wedding, and they have a nice wedding day.
Bobby and Grace have a nice wedding day and Grace finds out about Bobby's debt a few days after the wedding on accident.
Bobby and Grace sit down to work out a payment plan of their total debt together and their bond is stronger.
Grace is betrayed by Bobby's secret and takes a separation from their new marriage.