ditto what alot of posters said above. Here is my unique take on things, and to answer you question about movies and such specifically, check it out:
point 1: the partner up for life model we have today was created a few thousand years ago to keep guys from killing each other for "their women" sleeping around. "One man gets one woman" keeps this kind of mellow (except people now cheat in secret, but thats kind of off topic).
point 2: because most people have zero game, they only hook up few times in life, hence the scarcity model. Anything that is scarce is percieved to be WAY more valuable that it really is (ref. Cialdini).
point 3: when one experiences the wonderful feelings of sex and affection through a frame of scarcity, the "feeling" of love is created. This coupled with the social conditioning of "partners for life" creates the myth that is some wonderful life changing event. Kind of like a drug. Only, this feeling is fleeting.
point 4: people like to make money. they sell whatever crazy sh!t they can come up with. what you see in society today, is what has sold the most over the past generations. One of these things is sappy love stories and songs, because it reminds people of that "love" they expereinced long ago, or the "love" they hope to experience someday. Disney and all that. I personally believe that the CEO's, the driving forces, behind all these are quite alpha.
The take away ? (what this means for you...)
Once you realize the "one true love" is a self deluded fantasy, you can de-hypnotize yourself of the effect women have on you. And you start to see the world a little more clearly. And you take a step back and go "hmmmmm what the fvkk do I want out of life...." and then you, though effort, trial and error and all that, go into this wonderful world and get exactly that.
not so bad, hey?