A recent survey by Zoosk.com revealed:

78% of happy couples share decision making evenly. 

67% of happy couples manage finances together, instead of assigning it to one person. 

66% of happy couples share household chores such as cooking, cleaning and   laundry.

69% of happy couples kiss and show affection many times per day.

70% of people in happy relationships agree that it is not ok to tell "little white lies" to their partner to keep the peace.

74% of blissful lovers say it is important that their partner maintains   a good physical appearance. 

18% of respondents say that their partner's physical appearance is a main attraction.

37% of people in happy relationships never talk about politics

71% of people in happy relationships share the same religious beliefs and   traditions.

72% of happy couples have real conversations about life, work, and family on a regular basis.