I agree with spirit wings. I have two gay pair right now and I just let them be. I just put some dummy eggs so that they can feel happy. They were probably almost a mate now for almost a year,but because I don't like both of them (both are bullies) and I can't cull, I just want to make sure that they stay as partners. Yeah, I am evil with a dirty plan.
Separate your current breeder and get some new birds that you actually know their sexes and force mate them with your current ones.