There's a guy that started out as a joke to me. Just some silly UFO stuff. We went back and forth and I thought it was funny and cringe at first, but I honestly think he some serious mental issues and now I feel for the guy. I don't necessarily think he's going to harm himself or others, but I would like to push him to the help he needs. 

He doesn't seem himself like that, but it's pretty obvious. Maybe it's not up to me and there are boundaries, but I honestly don't know how to handle this. He's doxxed himself to me. I know who he is, where he lives, and he even sent me pictures. So I don't know if I should take this as a cry for help, or what. 

Should I push him to seek help? Is that offensive? Is it better to ignore him? He just have all the hallmarks of these kind of radicalized young men. I don't want to the the person who "ignored the signs." Like I said, I don't think he would harm anyone, but something is off. 

Is there a way I should approach this?