M.D.
It's normal. Vexing yes, but normal. We went through that too, and I recall feeling outright jealous. My husband really can't stand being around infants, and my toddler kind of knew that and she wouldn't even look up when he came in the door. Then one day, it all changed. Last summer, when she was three, she kept saying that she was going to marry him and went on and on about how much she loved him. She's still crazy about him, but she isn't snubbing me like she was then either. She worked it out. Perfectly normal.
Motherhood is a thankless job, eh?