On more than several occasions and still going, my roommate lets his girlfriend have the keys to our apartment and sometimes when I come home I find her in my place without my roommate. And sometimes I am sitting on the couch and the door opens and she walks in and closes the door behind her, again without my roommate. She then proceeds to his room to use amenities that my roommate and I pay for.
Does anyone else have similar experiences? If not, does anyone else think this is kind of awkward?