My favorite book to read to him is one his Aunt Lindsay got him, Where the Wild Things Are. This is why:
Every single time, without fail, when we get to the part where Max is lonely and wants to be where someone loves him, Connor always responds with, "his mommy."
I tear up each time, knowing that he correlates those feelings of love and security with a mother, hopefully his own mommy. The smile he gives me as I read that page is priceless. These are the moments I live for.