The real purusha is Krishna. And there is a nice example. When Rupa Goswami was there in Vrindavana in his bhajana, Mirabhai went to see him. And Rupa Goswami's message was that he does not see any woman. They were very strict. At least, the story is like...
So Mira challenged that "I came to Vrindavana. I know that only Krishna is purusha here, and everyone is woman. So how does it mean that Rupa Goswami has declined to see another woman?"
So Rupa Goswami agreed, "Yes, I am mistaken. Yes, Krishna is the only purusha."
So purusha means the enjoyer, and prakriti means the instrument of enjoyment.