Yeah, I'll agree with IrishLake. Age may be "nothing but a number" but most people are in very different stages of their lives. Most 21-year-olds are still in school, possibly living with parents, and definitely busy with schoolwork. Someone who's 26 may have gotten a serious job and lives in a decent apartment (wishful thinking).
This didn't really click for me until I met a friend about a year ago and thought he was cute or whatever. Turns out he's in a totally different place and doing other stuff with his life.
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