You may have a boyfriend now and it’s exciting being your first and all, but:
You did not invent romantic relationships. Your relationship is not a standard in which all romantic couples abide. Just because you don’t do something, does not mean other couples don’t do it, and vice-versa. The way you’re acting shows just how limited your view is.
Experience is something you learn from, yes, but you also learn from the people around you. Observing them, absorbing your environment, reading.