Just like girls, boys also experience a range of emotions during puberty. It's okay to express your feelings and talk to someone you trust about them.
A (1991 appropriate): "A condom is a thin latex covering that a boy puts on his penis during sex. It can help prevent pregnancy and diseases like HIV. You do not need to know how to use one now, but when you are older, it is a responsible tool."
Just like you might wake up two inches taller, your emotions can feel "bigger" overnight. Crushes are Normal
By 1991, sexual education had moved beyond just the biology of the "birds and the bees." It explicitly connected the physical changes to the process of conception: the union of a sperm (from a male) and an egg (from a female) leading to pregnancy. Anatomy was taught using correct terms (penis, vagina, uterus, testicles, ovary).