I don't love my daughter

I'm a 42 year old father of four, I have 3 sons and a daughter. My daughter is the youngest at 8 years old. My sons are 20, 18 and 15. I love all of my children very very much except my daughter. I hate myself for it. I want to love her more than anything but I just don't. I don't know why. I can't explain it. I watch parents who don't love their children and I wish I could be like them. I watch myself in the mirror and curse at myself for being such an awful dad. I don't know what to do. Am I doomed to never love my daughter? I feel so so guilty. I love my sons. I want to love my daughter too. I want to be a good dad to her too. I've tried so hard. But I just can't seem to. <br><br>At this point it's just so hard because she's getting old enough to realize that I don't show her the same amount of love that I show my sons. I'm scared that she will never love me back. I want a relationship with her so much.<br><br>I've never told anyone this before except my wife. She says she feels the same way but is trying too. She's an amazing mother to all of our children but she has the same problem with our daughter that I do. What do we do? Is there a way to make yourself love someone? Is it too late? I don't know. I'm just lost and I'm sorry if this looks like a rant, i just need some advice. Sorry if this gets weird looks.