cover story. this is our marriage. reporter: from the joys of long-term marriage.. still physically attracted to her. reporter: to the animal attraction of a strip club. they actually looked at strippers? there s a whole lot going on beyond the conscious mind. reporter: love is sometimes less less an affair of the heart than a function of the brain. i mean we are an animal that is built to love. reporter: better loving through science later on sunday morning. osgood: when you hear a popular love song in the movies or on tv, have you ever wondered who wrote those words? in many cases the music and words are two halves of one very loving couple. this morning our nancy giles will pay a visit. reporter: this is kind of where it happened. they ve written songs for movies, tv theme songs, and classic love songs. but even more remarkable is their 52-year marriage. how have you managed to combine working together, being married together. the way porcupines make
captioning sponsored by cbs and johnson & johnson, where quality products for the american family have been a tradition for generations. osgood: good morning. and happy valentine s day. i m charles osgood and this is sunday morning. today is d-day for lovers. this morning, we ll be taking a look at romance in many forms. to start with, we ll be exploring the mystery of what it is that attracts two people to one another. many would say it all comes down to having the right chemistry. increasingly science seems to back that up. tracy smith will be reporting our cover story. this is our marriage. reporter: from the joys of long-term marriage.. i m still physically attracted to her. reporter: to the animal attraction of a strip club. they actually looked at strippers? there s a whole lot going on beyond the conscious mind. reporter: love is sometimes less an affair of the heart than a function of the brain. i mean, we are an animal that is built to love. repor
captioning sponsored by cbs and johnson & johnson, where quality products for the american family have been a tradition for generations. osgood: good morning. and happy valentine s day. i m charles osgood and this is sunday morning. today is d-day for lovers. this morning, we ll be taking a look at romance in many forms. to start with, we ll be exploring the mystery of what it is that attracts two people to one another. many would say it all comes down to having the right chemistry. increasingly science seems to back that up. tracy smith will be reporting our cover story. this is our marriage. reporter: from the joys of long-term marriage.. i m still physically attracted to her. reporter: to the animal attraction of a strip club. they actually looked at strippers? there s a whole lot going on beyond the conscious mind. reporter: love is sometimes less an affair of the heart than a function of the brain. i mean, we are an animal that is built to love. repor