Mostly in a storybook, but often also implied in movies ...this moment etched in our minds, gives us a dream we so much wish was ours.

A storybook, usually referenced to children, has pictures or drawings.

Motion pictures are just that ...pictures in motion.  

We mostly refer to them as movies.

And of course, both tell stories.

With children, fantasy and comedy are popular ...but we adults like to imagine and laugh too.

Movies add to the senses as there can be much action, and the words become sounds ...many sounds. And it goes way beyond animation and musicals.

Books and movies can teach ...biographical ...documentary ...

But, mostly they entertain ...and elicit emotions.

We don't always know what our favorite, or our strongest emotions are ...but, it can range from action, adventure, science fiction, mystery, suspense, drama, thriller, horror, tragedy, and romance.  

I did not name them all, and there is often a mixture of the different genres ...but, I have named enough to have you guess which one usually involves the 'happily ever after' theme.

Yes, that would be 'romance'.