There's a love mattress that is specifically designed for couples who sleep on each other's arms.
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Parents receive 1 out of every 5 Valentines.
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Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
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Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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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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You burn 26 calories in a one minute kiss.
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A poll has found that computer 'nerds' make the best lovers, with 82 percent of IT geeks claiming they put their partner's pleasure above their own.
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