My 18 next month is scaring me . He smokes relentlessly and sent the last 3 days on z

My son . 18 in August is scaring me . He smokes relentlessly and spent the last 3 days on Xanax... I think due to a rejection from a girl . I'm single mum . Are arguments / chats have changed , I'm genuinely scared
Darcy

My 18 next month is scaring me . He smokes relentlessly and sent the last 3 days on z