Boyfriend coming over

I will be going to northeastern this year and i wanted to know if when my boyfriend goes to visit, can he stay in my dorm even if it is for girls only? If he can stay in my dorm, how can I arrange the bathroom situation when he comes over to visit me?

(Taking into consideration that I might not be having a bathroom to only my roommate and me, thus maybe id share one with the whole girls hall)

I think just about every building is co-ed. Floors or wings are separated by sex, so a bathroom for guys will not be too far from one with girls. Anyone can stay the night (up to 3 nights in a row technically) so long as your roomate(s) are okay with it. That should be the main concern, and is something you should approach carefully and respectfully.

Thanks a lot!