On The Young and the Restless apparently Courtney's mystery man Zach is detective Chavez. I had the theory that Courtney was not a drug user as Fen thought but was a seller of drugs. I thought she had no family or her family was very poor and that see supported her rich looking life style by selling drugs. In line with that I thought that Zach was her supplier. But now even though none of that is ruled out and may even fit better, I'm thinking that Courtney is working undercover, maybe after being caught, and that Chavez is her police contact. Of course this all could be wrong and there could be a completely different connection between Courtney and Chavez(Zach).