@shruthiravi, yes, he is obsessed. He isn't only obsessed, but also very very smart. And very patient. And one more important point - he doesn't give up
Dusky opened his eyes to him, come on, these eyes were never closed. These eyes have seen, and know much more than all the others
And he fights with the survivor. He wants to get one who always escapes and survives. He drives her in hopeless trap for years. Maya. That very Maya. And now, from some pathos speeches, he will abandon this Maya? From the most important and only goal in his life? From Maya to get which he is ready to do everything, anything? And everything, anything in this case isn't metaphor and not an illusion
And to Duffer's question, what he did to deserve Maya - nothing. He did everything possible and impossible to lose Maya once and for all. So, that even in the next 7 lives he will not have any single chance to find Maya