Everyone knows the cliches about being in love — your knees are weak, you lose your appetite, and you’re getting butterflies in your stomach. But it turns out that these amorous changes to your body aren't simply the invention of the poets of old. Being in love actually changes you, from the very chemicals in your brain, to the way you act, to the way you physically look. Paying attention to the physical signs from your body that show you're in love may be the only indicator you need that this is more than just a crush or passing fling.
Your body on love is a truly amazing thing. For the first few years of the relationship — called the "honeymoon phase" by most experts — your body and mind physically change in measurable ways. From that first date when you notice something different about them to the first time you make love — and all the small moments in between — knowing what is happening to your body can be almost as fascinating as actually falling in love. It turns out that you don't need experts or even your favorite romance novel to tell you when you're in love. The answer can be as simple as looking in a mirror. Here are nine physical signs you’re in love with someone.
According to Silva, the neurochemical process of falling in love is intoxicating, but momentary and dissipates over time — although it does truly feel intense in the moment. “The best part about love is that it continues to evolve over time and stages, with true euphoria or bliss happening after some time (often years),” she says. So although you might feel overwhelmed, obsessive, and sleep deprived for a while, things will fall into a more sustainable ebb and flow of love over time
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Dawn Maslar, M.S., science of love expert, love biologist, science writer, and adjunct professor at NOVA Southeastern University and Kaplan University