Its killing me

pi
I love my sister, and I love the fact that now.shes got a new bundle of joy.. but I'm jealous.. I'm envious that she gets to see both of her kids grow up together.. I'm jealous and hurting because I'll never be able to see my kids grow up together.. I'll never have a memory, a picture, see them play.. nothing.. and it's taking everything I have not to fall apart when I see them together.. I don't know what to do anymore.. I just want my kids together.. I just want my daughter to meet her brother.. I just want both of my.babies together..