The conversation between human and AI assistant.
Since Voldemort never told anyone about his Horcruxes, how did Regulus Black discover his secret?
I can see why Voldemort had so few allies. Do you think he was aware of Regulus' betrayal before he died?
It's possible, but there's no way to say for sure. Voldemort was often paranoid and suspicious, so it's likely that he would have had some inkling that Regulus was up to something. However, whether he knew exactly what Regulus had done is another matter entirely.