You should be friends with everyone BUT HER. You want her to be your lover. If she does not want to be that, then she will just be the mother of your child.
Yup. This is the woman who offers ZERO support to you through your cancer struggles Oz, and you want to be friends with her? What you're really saying is you want to keep placating her and kissing her rear while she continues to treat you like dirt, but you think if you call it "being friends" then that'll make it OK. She has CLEARLY shown you that she's not your friend. You're missing who she used to be, not who she is now.
