This is major. If you are dating a guy, regardless if he lives alone, with a roommate, or still with his parents, you should at least know where the man lives. How is it that he knows where you live and is welcomed to your house? Hmmm … Something clearly isnâ€™t right. Either he lives with a woman heâ€™s seeing, or his roommate and/or family knows that he has a girlfriend/wife.