Why do i love my unborn baby so much?

i just think its an amazing experience,growing this life inside of us,i have 2 older children both boys,have longed for a girl....and now 10 years later,i will meet her next friday....i am so in love with her also....i daydream about what she looks like ,her eyes,her hair, little pink dresses....mommy and me cles.....i cant wait until shes old enough to go have breakfast with the princesses at disney...lol...i tried to get my boys to go with me,they didnt like that idea...lol.....its a different bond i think,a mother daughter bond......