I have always had this gift of "reading between the lines."  While some people put two and two together only to arrive at five, I nearly always know that the answer is four.
Some people call this intuition, and that is a part of it; but it's more than that.  It is, for example, automatically knowing that one can learn a lot more about a person by what they DON'T say than by what they DO say and by what they DO as opposed to what they DON'T DO.   How loud a person protests that something is NOT true is also a good indication that it is indeed TRUE. We have all heard the expression, "Methinks thou doest protest too much."  Constantly trying to convince someone he is wrong is a strong indicator that the person is indeed right
For example, a woman tries to convince someone that she has a happy marriage; yet, in all the arguments she presents,  NOT ONE TIME does she mention that her husband is "in love" with her. 
Instead, she gives examples of his behavior.  He has never cheated, at least to her knowledge; he's a good father. However, some of the biggest cheaters in the world are very attentive fathers and even attentive husbands.  Means nothing.
Most men will give a form of love in exchange for sex and companionship; however, if they ever fall "in love" or have been "in love", they may leave that relationship if the right circumstances present themselves. 
In addition, people like this are NOT at all secure; they spy on their husbands, reading their personal correspondence and they spy on others whom they consider a threat.  A woman who is secure in her marriage and completely certain that her husband is IN LOVE with her would not waste her time.  There would be no need. Another tell-tell sign that all is not necessarily perfect in paradise. 
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In sales, there is a term for this type of behavior. Sales people call them "smoke screens." They are excuses people present as argument or fact as to the reason they will not buy when in fact they are neither. It is up to the sales person to fight through the smoke screens to discover the ultimate reality. Once the sales person diffuses all the smoke screens, he will make the sale. The same applies in life. Somewhere between the argument and "so-called facts" lies the truth.

However, to get through those smoke screens, the sales person may have to take the person out of his comfort zone. When "reading between the lines," again the individual may have to be brutally honest.

That makes people uncomfortable and they may accuse the person of being vengeful, spiteful, or hateful. That's not at all true. It is simply being pro-active. Statistics support the assumption that being pro-active is much more effective in reaching one's goal than being reactive. It's also the key to our simple little math problem.

Finally, if you come across a child whose birthday falls seven or eight months past the month in which a couple marries, it's a fairly safe bet it was a shotgun wedding.  It is not necessary to know WHAT YEAR the couple married if a person is adept at "reading between the lines."
And that's what I mean by stating that I nearly always know the answer is four.