I'd say it's a good sign. I can't remember when my girl started refusing last year, and I'm too lazy to check, but I think it was some time in February. If you have been locking for months, there's a good chance he got the deed done! At some point the female will stick to the warm side and never leave. I think my girl laid in a perfect coil for a couple months. It will happen eventually. I would pair a bit more just to make sure she's refusing indefinitely.