Depends where you live at ig 🤷 In our city, yeah the landlord is entitled to know if there is another tenant living in the unit. Like are you renting out your place with another? Is that a sketchy person? Or in this case taking in a minor.
Landlords should know that. They way tenants should know someone died in the apartment ☠️
???? If you're renting someone's property they have every right to know what you're doing in their land. I don't know how you think he doesn't have that right.