Can anyone tell why people fall in love?

My answer is going to sound jaded and sarcastic, but keep in mind the scientific basis.

The human brain can become addicted to anything that produces endorphins and pleasure hormones, hence the reason people love rollercoasters and fast cars.  I've theorized for years that the chemical reason for love is that simple: Being around Jane makes John feel good, so John wants to be around Jane more often, which makes him feel even better, which gets his brain addicted to Jane...John's addiction to Jane is translated as love, just as a heroin addict loves the junk.

But we enjoy many people.  We don't fall in love with all of them (one hopes!!)  I have known many men that made me feel good ~ happy, ~ over the moon, but I didn't love them.  Perhaps some people mistake happiness with love.  I am happy, so I love you.  Oops! I'm not happy any more, so I don't love you.  I think this is why there is so much divorce.  We don't wait long enough to get over that initial "happy" feeling to see if the emotion is long lasting.  I really can't agree with you, Glyttch, because a true addiction is difficult to shake.  People drop the ones they "love" like they drop a Kleenex once it is used.  Perhaps true love ~ the real deal ~ is an addiction, but happiness doesn't bring on the real deal.

I was talking about love in the purest sense of the word, not the diluted, overused "I love you" that people throw around today.  You don't actually LOVE your shoes, even if they did cost $300.  I'm talking about fully committed love where if you lose (for whatever reason) the person you're addicted to you go through withdrawls, actual physically painful, curled up in a ball on the floor of your room screaming "Why god, why?" withdrawls.  And there are levels of addiction, just like anything else.  I'm addicted to smoking, I LOVE smoking, Nic O'tine is my little best friend and he comes in packs of 20 and I miss him when he's gone...on the other hand I'm also addicted to pizza, have to have it, but not nearly on the level that I have to have smoking.  I've considered beating a friend unconscious for a smoke, or stealing them, but would never do the same for pizza though the "jones" is the same.

I don't think most people ever fall in love that deeply.  We are in too much of a rush to "find happiness" with someone, so when we find happiness we think we are in love.  Then we find ourselves in long-term relationships that we stay in for a bunch of different reasons . . . . the kids, money, fear.  I quit smoking 4 years ago, and it wasn't all that difficult for me.  I have been trying to quit ice cream for my entire life, and finally realized it would never happen.  I have only loved that deeply once, and I doubt if I will ever let myself fall that hard ever again.  So, in a sense, I would rather have a bowl of ice cream than a true love.

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(So could sex save your life?)         Its really great and makes sense. too. 

No but i can tell you this its natural i mean love is gunna hurt sometimes but everyone goes through that process... Boy meets gurl and looks in her eyes time stands still and two hearts catch fire.. Thats how ive always imagined it...Love is a gift though it may tear you apart.. We fall in love because its in our nature i mean falling in love is something we all share...