40% of people who are rejected in romantic love slip into clinical depression.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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As a rule, 66 percent of people keep their eyes closed while kissing. The rest take pleasure in watching the emotions run the gamut on the faces of their partners.
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There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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One in five long-term love relationships began with one or both partners being involved with others.
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Erotomania is a type of delusion in which the person believes another person is in love with him/her.
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Men who kiss their wives in the morning live five years longer than those who don't.
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