We have no idea how you presented this.
But what you’re asking for is reasonable
A request to be able to sleep, especially because you’re working…. Those are NEEDS.
Is your partner awkward about letting his kids, especially the youngest, know that he’s in a bed-sharing physical relationship? Is he hiding it from them?
Is he trying to be the good-guy when you say, “Shhh. I have to work.”
RDMercer