The one in your house is so fierce, you can buy a heterosexual one first, isolate the cage from the original one (but pay attention to putting it closer), and then observe it. It turns out that it can only be reflected by biting, scratching and biting. . . . Then you can give it proper education, such as slapping it when it bites. . . .
But if he is nice, then you can put them together for a while, (but also pay attention to observation) so that the young couple can be together "endlessly"!