My bf asked that I don't stay over when I have my period

A girl got in touch with Niall and Sho with a pretty shocking dilemma. Here's the gist of the email."I was over last night and I told him my period was coming and that I needed my hot water bottle. He said that he was glad I had brought that up cos he had something to say. He said that from now on it's best if I do not stay at his house when I have my period anymore. He went on to list his reasons - I toss and turn in the bed, I am moody and I take too long in the bathroom. He said he likes me but that this just has to be the rule."