uh, can someone explain this?

i did my free annual credit check last night and bk's current address (the place he shares with miss bk and her brother) came up on my list of former addresses. is there any reason at all that his high end apartment complex would run a credit check on ME? not just cause we're married right? i mean...they wouldn't need to know that. does this mean that if they don't pay their rent my credit is at risk? what should i do? report it to one of the credit agencies? contact the apartment complex? i can't believe this. or worse yet, i can.