Well, my parents' marriage is not particularly special since they both came from same background (asian) , only 1 year age difference and same social level.
They also follow a very traditional gender roles where my father went to work from 9-5 and my mother taking care of things home.
What i notice from the dynamic of their relationship is that My mother is very submissive toward my father, She trusted him to make every decisions in the household (again, very traditional).
I never really see any evidence of what we usually refers as 'love' but i can asure you i fully understand what we usually refers as 'committment'