But by the time guys reach 20 or so, they rate a person's inner qualities as most important.
Teen girls emphasize closeness as most important — although they don't mind if a potential love interest is cute too!
Like putting all our energy into winning a race, this kind of passion is exhilarating but far too extreme to keep going forever.
These new feelings can be exciting — or even confusing at first.
We've loved (and been loved by) parents, brothers, sisters, friends, even pets. It's an intense, new feeling unlike any of these other ways of loving. When people feel close to others they are happier and even healthier.
Love helps us feel important, understood, and secure.
Romantic love is when attraction and closeness are combined.
Lots of relationships grow out of an initial attraction (a crush or "love at first sight") and develop into closeness.