It could be scandal in some cases. It could be near occasion of sin in some cases. What I don’t understand is why so many Catholics seem to think it will always be the latter. Do some of the people on this thread really, truly believe that ANY random man will be seriously tempted by ANY random woman? I have a much higher opinion of people, even secular people, and their ability to control themselves. I a man and I have had numerous close female friends who I could never ever, under any circumstances, be tempted by in a sexual manner…sexual attraction simply isn’t there. There may be various reasons why it isn’t ideal for a single man and a single woman to live as roommates, but it should not be ASSUMED that there will be near occasion of sin. In regards to scandal, this is also subjective. In many places, it is now quite common for men and women, especially students, to live as platonic roommates, without any expectation or assumption of sexual or romantic activity.