Do Men Love Their Girlfriends Less After Looking at Other Hot Women?

Ladies, no matter how pretty you think you are, the constant comparisons won't work in your favor. It's now known, for instance, that male high school teachers and college professors have suspiciously higher divorce rates, whereas male kindergarten teachers tend to be more monogamous.
Psychologists Douglas Kendrick and Sara Gutierres at Arizona State University study what is known as "contrast effect," which occurs when a person of average appearance is directly compared to gorgeous people and judged as less attractive than he (or she) would otherwise be. For example, in one of the studies, undergraduate men who recently watched this video: http://www.youtube.com/watch?v…..OEC2jWXqOY , were significantly less willing to date average-looking women than were men who HADN'T recently seen that video.
In a similar study, the psychologist recorded couples who lived together and were in committed long-term relationships. The experiment, which covered art appreciation, required the participants to view pictures of their "well proportioned" opposite-sex centerfolds or abstract art. After viewing either the hottie or the art, the men and women answered questions about their feelings for their partners. Strikingly, the men who had been gazing at the babe indicated less attraction to and love for their girlfriends or wives than the men who had been looking at abstract shapes and colors. Meanwhile, for women, looking at pictures of beefcake was "pleasant" but didn't affect their feelings or desire for their partners. (However, in another study, women did downgrade their partners after reading about men who had status and resources.)
It's one thing for a women if her boyfriend/husband just looks at beautiful women, and it's another story if these women are flirtatious. In a similar experiment, at McMaster University, researcher Sandeep Mishra and his colleagues showed men videos of an attractive woman. Some of the men watched the woman radiating warmth and implying the possibility of a future invitation, while the others watched the woman acting neutral and uninterested. The group of men who saw the woman acting flirtatious rated their partners as significantly less attractive than did the men who saw the same hottie when she acted bland.
The contrast effect is completely subconscious. Men really don't mean to think you're less attractive or love you less after seeing young, hot chicks (even if you're also one). Mass media and everyday life introduce an abundance of gorgeous women and comparisons are inevitable. When the mating pool seems to include more and more hot women, an average-looking woman, or even a pretty one, no longer seems like a good catch.
Exacerbating it all is men's knee-jerk neurochemical response to the sight of receptive, beautiful women. Men are known to react strongly and irrationally, thanks in part to high testosterone levels and activity in the amygdala, the part of the brain that makes spur-of-moment decisions. Some men raise their criteria and expectations unrealistically, while others soon recalibrate when they realize their mates value really isn't high enough to attract an Adriana Lima or even the flirtatious bartender at the local pub.
–National