Since your 13 year old boy wants to wear diapers again he's likely a diaper lover.
There are thousands of people who like to wear diapers at any age.
I loved wearing diapers since I was 5 years old and would wear diapers for fun at age 8 and even 13 years old.
Your 13 year old boy is not alone in liking diapers as many people do enjoy diapers.
I would recommend buying your 13 year old boy some diapers.
I'm sure your 13 year old boy if skinny enough could fit in Dollar General Gentle Steps Size 7 diapers.
I can fit in them myself as an adult although I also like to run some packing tape around the diapers waistband to make sure it stays secure.
If your 13 year old wants to wear diapers again he should be able too.
Diapers are fun to wear and I wear diapers all the time and right now I'm wearing a Gentle Steps Size 7 diaper that is wet.
I'm gonna sleep in my wet diaper as well tonight as it feels great.