Our Genealogy Guide here at About.com, Kimberly Powell, has a great article about the customs of love, marriage and dating. It's appropriate reading for this romantic time of year!

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Related: Valentine's Gifts Through the Ages

One of the most important skills a married couple needs to learn and practice is how to handle conflict in their marriage. If you are afraid of rocking the boat, or willing to keep the peace at any price, or feel as if you are walking on egg shells all the time, you are avoiding conflict instead of dealing with conflict.

From reports circulating around the internet, it appears that the marriage deal breakers for Heidi Klum are Seal's apparent inability to control his anger and possible jealousy over Heidi's success as a business woman. If Seal does have an anger management problem, Heidi can't change him. This is an issue that needs professional counseling.

Dr. Bethany Marshall: "A deal breaker is a boundary that smart people set for themselves because they know that falling in love can make them do stupid things. The tricky thing about deal breakers, however, is that they are not always apparent at the beginning of a relationship."
Source: Dr. Bethany Marshall. Deal Breakers: When to Work On a Relationship and When to Walk Away. 2007. pg. 5.

From Around the Web:
Heidi Klum and Seal Divorce Over This 'Deal Breaker,' What's Yours?
Heidi Klum: She Couldn't Take Seal's Temper Anymore

Saying their separation is an "amicable process," Heidi Klum and Seal mentioned in their joint statement that they "continue to love each other very much, but we have grown apart."

Heidi Klum and Seal appeared to be doing many things right to keep their marriage out of a rut and to stay close to one another, yet they are still calling it quits. Hopefully, their separation will lead to reconciliation and not a divorce.

Related: "I love him, but I'm not in love with him ..."

This is an interesting article about people lying over the telephone. Jack Schafer, Ph.D. who served as a behavioral analyst for the FBI, shares techniques that help provide a "probability of deception."

Here are a few things Shafer recommends being aware of:

• Long response times
• Use of word fillers like "umm," "ah," "well," and "uh huh"
• Evasive answers

Related: How to Tell if Your Spouse is Lying