Cell phone records and records regarding text messages are two different things.  First, if he is authorized on your account then yes, he will probable be able to get them to send him the records.  You need to call and make sure that he is NOT authorized on youraccount.  Now, as for the text messaging.  Generally speaking the cell phone companies do not give out content of text messages.  In fact, they do not keep the content of the text messaging for many reasons.  So I think that you are fine there.  But again: make sure that they know that he is not authorized on the account.  And call back in a few days to ake sure that the account reflects it. Good luck.