Because once you get about a year into a relationship, the physical manifestations of being in love may begin to fade, according to a study released recently by the University of Pavia in northern Italy.
The Italians found that a chemical in the brain is responsible for those early relationship feelings, but the levels of the chemical -- a protein, actually -- recede over time.
The study compared the protein levels of 58 people who were in a new romance to the same number of people who were in long-term relationships, and also single people.
The levels of a protein called nerve growth factor, which causes those weak knees, butterflies and fluttery hearts, were higher in those in a new relationship. And of the 39 people in the same relationship after one year, the levels had dropped to normal.
Actually, the researchers termed it "the end of romantic love."
No more romantic love? Sounds depressing.
But there's hope. Just because a couple doesn't get the sweats every time they're together doesn't mean they're no longer in love with each other, the scientists cautioned. Rather, the love is no longer acute, as they put it, but is more stable.
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