And of course MC Eiht would say... Fuck Em all. Dont worry about what they think. If you pay your share of the rent and bills and what not than you can do what ever you want as long as it doesn't impose too much on their comfort. So bringing home a pet elephant is out of the question.
Other than that do what you want. If they are bringing people over than you have every right to. It doesn't matter where you meet him. Wether it be online or at a club or at a library. You're an adult and can make up your mind.
Usually when people tell me I can't do something it makes me want to do it even more. Although that's just the kid in me coming out to play. Plus I'm a self admitted asshole so I don't know if you want to take my advice.
Do what makes you happy and fuck everyone else. As long as you are not causing them any physical pain they have no right to judge what you do.
It's none of their business and as far as I am concerned... those who judge can go straight to hell.
Now I am going to write my senator and see if that can be arranged yet...