@ Samantha Rae
I have to tell you that the sum total of the comments you have made here (mostly jealous, probably because I’m nearly half her age and i don’t mind rubbing it in her face just a little and he’s finally being treated the way he deserves (you don’t know what he deserved from her you weren’t in that relationship and he may be a totally different man with you) have painted a picture of you as a young woman who mistakenly feels that she must “hate” the ex in order to love the man. That is a pretty immature viewpoint.
It is okay for your boyfriend to have an ex that he no longer wanted to be with without painting her as evil incarnate.
It is okay for you to understand that this woman may be a tad touchy about “sharing” her children with you without it being related to her jealousy that you are “younger than her”.
Few women are actually jealous of the relative youth of their ex’s new woman. At most they may be maddened that they spent their own youth with a man that apparently stopped “growing up” somewhere about the halfway mark. Hence their perfect compatibility with you..the half their age woman.
If it is a key bonding point for you and your new boyfriend to hate the ex I warn you that any behavior you see him exhibiting towards his ex, his kids or allowing from you and directed towards same is a little preview of how you may be treated someday or your children may be treated someday when the new and the youth have worn off your relationship.
Be the kind of “new girlfriend” you would want to deal with in those circumstances and you can’t go wrong.