We’ve been seeing a lot of posts about multiple accounts using the same IP. When this happens, the casino will usually close the account, and worse, they might even confiscate the funds. As gamblers, we want to be honest and follow the TOS, but what if you’re living in a house where your family also loves to gamble and you all use the same site? Is it reasonable for the casino to close your account for multiple accounts, even though you didn’t actually create them, but because you share the same IP, that’s what they see?
It depends on the casino. In my country, casinos prohibit two accounts under the same household but in reality, no one has been blocked locally for that reason, casinos tolerate that because they know our culture, we love to collect together and gamble from the same place. So, not only do many family members have accounts under the same household, but they also go to their friend's houses and 5-6 people gamble from the same IP address.
I think you will be able to make a deal with casinos, you have to explain your situation to them and give them proof that you and your roommate both gamble and your intention is not to violate the rules. You have to be sure that you get green from the casino before you deposit money. I believe that it's possible to make a deal because casinos don't want to lose any customers.