Of course I would be pissed. And I also would consider punishing. BUT!
Please read my text again and try to understand.
Young people tend to do often things they regret afterwards. Who knows whether that guy haS parents that cared or not. And when you're desperate and helpless, sometimes you do mistakes. He should have told her in the first place and he should have considered that it was a very bad idea. He should, he should, he should. Eventually he did tell the truth at the end and he regrets.
Don't judge so much. If you were in this situation, you also would be happy if someone would help you out. People are different and they act differently in terms of dealing with problems. I hope he leaned that this was the wrong way! Still.