Planning a baby with my best friend.

Me and my best friend are planning to have a baby.

Last year I got pregnant by him and had a miscarriage. I am in love with this man. But he doesnt want a relationship... ever. He said they are not for him and he always ends up hurting someone. He loves me and takes good care of me, almost like we are in a relationship but with out the commitment. He likes his freedom and I eventually do want to get married if I ever meet the right guy.. but.. I can not get him out of my head.

He wants to give me a child and he wants to start trying soon..

My question is.. is this so weird? Bad? My sister seriously disapproves. But I don't see anything wrong with it if I'm happy.