Moving in with a man with older children can come with unexpected complications — especially if those grown adults are quick to cast you in the role of evil stepmother. A jealous stepparent focuses on something the child has that the stepparent does not — whether real or imagined. While it can be embarrassing and difficult for stepparents to admit (to themselves, let alone out loud to others) that they might be feeling jealous of their partner’s children, acknowledging that.
The spouse is likely jealous of the amount of time the biological parent is. If you have the chance get out while you still can. From a step mum with a 20 year old stepson, it never changes.
He's jealous of me and lets me know i'm an outsider at every opportunity.