Teens who engage in sexual intercourse early might end up being bullied and labelled in a negative way as unfortunately we live in a society that does that. Friends and family might turn their backs on them and make them feel socially isolated. They could end up pregnant and still have to attend school while pregnant and deal with extra abuse from other kids and possibly teachers.
Teenages perceive sexual activities as exciting and good. They think that is will be OK if they go ahead and try those things. When in reality, it will put them in greater risk of STD's or STI's, or an unwanted pregnancy. :)
He should proceed by finishing the story. Tell what happens after he’s in the room