Romantic and passionate love can fade over time and mature into a committed love.

Couples can rekindle the sparks of early courtship simply by doing something novel together. Studies show that partners who regularly share new experiences report greater boosts in ma...

Learn to fight constructively. The aim is to leave you feeling better about your partner.

• Identify the complaint, not the criticism.
• Avoid "you" phrases. '"You never" and "You always" followed by criticism.
• ...

Fights about money are really about a couple's values and shared goals and seldom about finances itself.

• Be honest about all your spending.
• Maintain some financial independence. Both sides can have their discretionary pot of...

• Romantic love: Based on passion and sexual attraction
• Best friends: Fondness and deep affection
• Logical: Practical feelings based on shared values, financial goals, religion etc.
• Playful: Elicit f...

Ways you can protect your relationship:

• Avoid opportunity. Avoid situations that could lead to bad decisions, such as late nights with colleagues.
• Plan ahead for temptation. Remind yourself of steps you will take to avoid temptation and prot...

Committed couples do have more sex than everyone else. But Americans who are not having that much physical intimacy are just as happy as their more active counterparts.

Sexual frequency declines 3.2 percent a year after the age of 25. But the good news is that what married couples lack in ...