Laura/Ben
Not for the first 16 years of my life. I was raised in a Facility that hated him and thus hated me. I was supposed to be born a male but when they realized the Y chromosome was defective, they decided to duplicate the X-chromosome and I was born female. I was made to be skillful in nearly every type of hand-to-hand combat and weapon use. The only problem was that I was empathetic and didn't want to do it so they made a scent that would turn on pure instinct to kill and turn off everything else.
I met Wolverine only after I had left, after my mother died. I didn't hang around him too much, though, so I would say the months I have spent here are the longest I have spent in his company.
I wish I could say that not having a childhood is better than mine, but not when that childhood is not even your own. I am sorry.