I might go along with this once, if I were in your place. But I would now tell boyfriend that we are never doing this again . . . at least not in a way that involves me . . . were I you. I would tell boyfriend that, if he ever feels the need to do this again, he should plan on taking addict-son to a hotel with him.

Your boyfriend's friend needs to go to Nar-anon. This rescue mission - IMHO - is not how you help an addict. I agree that, if the dad wanted his son found, that's not something a parent delegates. He had some nerve would be my take.

You're right to see this as a dangerous involvement. You are just lucky that your home wasn't robbed.

I've had people I love get seriously into substance abuse. I was willimg to do just about anything to be supportive of them in getting cleaned up. I've visited where someone was staying at a rehab facility. I've had homeless loved ones (2 of them) come to my door, and I've taken them in. But I also understand that I cannot make another person's decisions for him/her. I've lost a beloved relative who used drugs to suicide. I'm plenty sensitive to the pain of having someone you love get caught up in addiction. Combing the streets to rescue someone does not work. I've done it and I know others who have. Maybe we got a result that felt good for the night, like your boyfriend probably felt good after you had addict-son tucked in bed. You'll probably hear the longer term upshot of this mini-drama. The young man will be right back out there.

I'm wondering how old was this son of the friend? If he was a minor, the dad should have undertaken the search himself, if he wanted to find his kid. If he were over 18 years of age, then I think the whole "rescue mission" was ill-conceived.