NC meets childhood friend in Mexico

This happened around 1998. I grew up and still live in NC. My brother was stationed with the Marines in San Diego. I went to visit him one summer and we decided to take a day trip to Mexico. We stopped in Ensenada and walked around the town, not even in a very "touristy" area. I hear this guy yelling "hey buddy do you have a dollar!". Turn around and it's a scraggly bum trying to get money. We keep walking and I turn around again and I tell my brother "hey I think that bum is Nathan". He says who? And I say it's Nathan, Christy's little brother. He says no way. I barely recognize him but it is definitely Nathan. We talk, he says he is Nathan and he is very drugged out and schizophrenic. He asks why we are following him and is saying the rapture already happened and all kinds of crazy stuff. I don't give him money but take him to lunch to feed him. We talk a lot and even before we ate lunch there was absolutely no doubt it was my old friend. I take a few pictures and then call his sister and mother when we get back to San Diego. They are crying and can't believe it. Nobody had heard from Nathan in a few years. Nathan said he hitchhiked via mostly truckers from NC to Mexico and was raped several times along the way. I still have the pictures and it freaks me out to this day.