Research and sociological studies highlight several reasons why these pairings occur:

Relationship therapists often emphasize that the success of any partnership depends more on individual personality traits and relationship skills than the number of years between the partners. Organizations like the Gottman Institute focus on "The Sound Relationship House" theory, which posits that trust and commitment are the primary drivers of longevity, regardless of age.

: External judgment or "ageist" comments can still occur, requiring couples to build a strong internal support system.