Semantics
We don’t think it’s anybody’s business whom you bring into your home and what you do together. So that’s why we think it’s pretty out of line for this landlord to judge his female renter for having her boyfriend over. After all, how does it affect him if the boyfriend spends the night? It isn’t illegal, and it’s only normal!
Rent isn’t generally based on how many people live there. We smell something fishy going on here by this landlord trying to raise the rent. You never see apartments advertised as “$X per person.” They are a flat rate, period. So dropping this rate hike on his renter is a shallow move.