DS (19) is working part time and living at home as a university student. He's met a girl at work, they are friends and he's been giving her lifts etc
The girl has some problems with her parents and recently not been going home, seems to be staying with a friend of DS's due to this.
DS seems to go running if she needs a lift / any support with anything and has been staying out really late (e.g. till 4am) with her and is worrying about her and he's struggling to get up for work and university
Thing is he is over 18 now and I guess it is up to him but would you say anything get involved?