
Quoting
cbg
No. If things happened the way you say, (and I have no reason to disbelieve you) there is no potential for you to get into trouble.
However, there is a fairly common scam where you would subsequently get a message from someone claiming to be the parent of the minor and threatening you if you do not pay some money. NOTHING WILL HAPPEN TO YOU IF YOU DO NOT PAY. You will not be sued, you will not be reported to the police, you will not face any charges of any kind. This is a scam.
Just delete the phone number and if you get any further messages, ignore them.
ETA: Carl, I owe you a beer.