Is it true that “adult” relationships are better than “high school” relationships?

And by “high school” here, I mean high school AGE, so I may as well refer to that as “teen” relationships. Anyway, when I got out of high school, I complained to someone, “Adult relationships are different from high school relationships!” And that person replied, “But they’re BETTER!🙂” So is that true? And if so, then why?
Is it true that “adult” relationships are better than “high school” relationships?
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