It depends on the regulations of your university. Some universities don't talk about bringing girlfriends back to boys' dormitories, and even dating is forbidden. So this kind of school has many restrictions. You must first understand the rules of your dormitory. Actually, I think if he has no rules, you'd better not take them back. Because boys' dormitories are shared by several people. Your classmates are also in it. It may be inconvenient for you to bring a girl in suddenly. And some students will feel unhappy, although he didn't say it, but you will feel it. So I don't think it is necessary to bring my girlfriend back. If you have an appointment, you can wait downstairs. No one will know how you two made out outside. This will not disturb the people in the same dormitory. In this way, we respect others and ourselves. I think this is the best way. So there's no need to think so much. Try not to disturb others about anything, so that others will not gossip about you.