These people will have dates on a regular basis, and they may or may not be having sexual relations.
This period of courtship is sometimes seen as a precursor to engagement or marriage.
What I've seen happen to most people, is that as they go through life, they become less of a copy of everyone around them when they were children, and more of themselves.
Whether that makes the better or worse, is a matter of opinion. [Edit: After reading the OP, I would make the above apply to both questions.
There's a lot of excitement about the August 21 solar eclipse, and for good reason!
If you're in the States, it's the first one to traverse east to west coast in nearly a century.
From the standpoint of anthropology and sociology, dating is linked with other institutions such as marriage and the family which have also been changing rapidly and which have been subject to many forces, including advances in technology and medicine.
But, wouldn't it be cool if you could see how many solar eclispses are left in your lifetime?
Thanks to this fantastic data visualization you can.
Some of us struggle more than others with the ease with which we allow ourselves to become emotionally invested in someone of the opposite sex, which puts us in the friend zone and forces us to figure out for ourselves how to get over girl-related frustrations.
My response as a young man in my late adolescent years was to cut off the feeling of emotional investment entirely.