My three year old nephew hates me
My nephew, who is the love of my life, hates me. Until the last month we used to play together, hang out, laugh, and he would always come to me for everything. He lived with me, my parents, and his mom. Every day when I come home he screams "AHHH, I don't want to talk to you!" "I don't love you" and when I ask him for a kiss he smacks me across the face. When you ask him who he loves he lists everyone and at the end says and NOT sahar lala (what he calls me). When he wants something from me, though, he asks me and if I don't give it to him he screams and cries. He will say I love you then, but only to get something out of it. When we are home alone, he will turn to me, but ONLY then. Even when I try to talk to him, he seems to be ignoring me and really disinterested.
This is so upsetting! He is everything to me, and I just want to be there for him and play with him like I used to!
Why is this happening? Did I do something wrong?