Sharing a 'roommate girlfriend erotic story' is highly inappropriate. Such content is private and should not be made public or spread around. It goes against basic respect for others, and we should focus on positive, respectful, and appropriate topics in our conversations and interactions.
Definitely not. It's not only unethical but can also cause a great deal of harm. It can damage the reputations of those involved and create a very uncomfortable situation. We should abide by moral and ethical standards and not engage in or promote this kind of behavior.
No. Sharing such stories is completely inappropriate. It involves violating others' privacy and ethical boundaries. A relationship should be respected, and spreading any form of improper or unethical stories about someone's relationship is unacceptable in a civilized society.