Took my nephew in after my sister passing away

I took my nephew in when he was 5 months and I was 24 me and my boyfriend been raising him since. My sister was in a car accident and got burned alive:( I honestly love this little boy soooo much like if he was my son, he has taught me everything and how strong I am and it's so amazing how strong he is. He is turning 1 in November 12<3 I just wanted to share about how much I love him and how much it's gonna kill me inside when we tell him about his mother :(