My 17th yr old teen has asked to stay at a teenage female friend he has met online, which seems to be the norm in the teenage world. (she has visited our home once) whom I have met briefly once. She has invited my son to stay at her father's 2 nights. I have never met her parents (divorced) and I am very nervous of saying yes but yet don't want to have my teen feel that I am doubting his judgement and undermining him. What would you do? Any feedback is good to hear.