(friend) how to tell someone who wont listen

Me and 2 of my friends took another friend to Al today to see his internet G/F for the first time they have been E-Dating (((I guess you could say))) he also talked about living there and my friends and myself think that something is going to happened...

where he is going to end up coming home but we can't really explain how we know or how we have these feelings and we want to tell him but he doesn't listen to anyone ever and everyone is getting mad at him for it, So I guess what I want to know is should we tell him and how

explain that to him the way you just did and tell him he needs to start listening and blah blah blah and get really emotional maybe even try to shed a tear