Yes, they can. They could possibly have known since they first started noticing guys. Kids start noticing each other as they mature. It could be from first grade and up or even younger.
The plural form of thirteen year-old is thirteen year-olds.
I do not know, my friend...
Of course.
A thirteen year old is considered a teenager, not a kid.
No, the words 'thirteen' and 'old' are adjectives; the words 'years' is the noun they describe.In the form a 'thirteen year old' followed by a noun is an adjective phrase:They solved the thirteen year old mystery.A thirteen year old boy wrote the song.
you dont know what love is...no really, you dont.
Yeah,I know someone who's 11 and is a tutor.
Well... I will tell you I know a thirteen year old who found out he was PREGNAT!
Anyone between 12-15
I don't know the record but i'm a 13 year old boy and i jump 16'3
Most likely. I know a thirteen year old who's only 90 pounds.
Well that would probably be 135 lbs but do you know any 6'2 13 year old girls?