Sirius really couldn't fault her logic. He'd pretty much stopped living in his apartment when he found out that James was here, although he still used it occasionally as a love nest. It was pretty convenient, really, to live with James and Lily and have a nice private place to take women.
"Gives everyone a headache," he agreed. "Because it's insane."
This coming from someone who knew that dragons were real and who could turn into a dog at will.