<human>: Condense the text into a few key points

My parents own some rental properties and they offered me an available unit at a discounted monthly rate because they are incredibly generous and all around awesome parents.

I've been here about 5 months now and I love it.  In other great news, I'm seeing an awesome guy and I'm pretty sure we are going to get serious with time.  He sometimes spends the night here, sometimes I will stay over his place, as our busy work schedules permit.

OK- so the issue is that because my parents own the building, my dad will sometimes just show up "because he was in the neighborhood," or to "see how my dogs are doing."  Which is cool, but what if it had been a bad time? This bothers me.

This morning, my dad calls and asks flat out if I have a new boyfriend.  He says that he does not want any men spending the night here.  He says he is OK with me having friends over, but not a boyfriend.

I stopped myself from saying "you do realize I am 30, right?"

Is it reasonable for him to forbid me from having my guy stay the night?  I feel like I should be able to, but also feel that since I am renting from them at a discounted rate, they might still have some say in the matter.

I'd just like some outside opinions.
<bot>: I am 30 and rent an apartment from my parents. My dad says I can't have a boyfriend stay the night. Is this reasonable?