I'm trying to find a partner who's interested in marriage, kids, nesting, etc. I've also been in a committed relationship for the last 2 years with someone who doesn't want those things, nor do I particularly want those things with that partner

How do I convey this in a dating bio? I want to disclose that I'm partnered, and to say that I'm looking for marriage/kids/nesting, while making it clear that this existing relationship isn't something that'd get in the way of that. I was given the feedback that just saying "partnered" makes people think it's something that would interfere

Most of the ways I can think to say it though downplay that relationship or sound disparing. For instance, it's not a casual relationship (we expect/hope to stay together for a very long time). Saying "I'm looking for marriage, which my partners aren't interested in" makes it sound like I'm resentful or would abandon a new person if my existing partner changed their mind. The best wording I've gotten so far is below but it sounds kinda clinical. Here's the relevant paragraph from my bio:

Kinky. Nerdy. Autistic. Demiboy. I'm poly, partnered (non-nesting), and open to many types of relationships. I'd especially love to find a nesting partner who wants marriage and kids. I date separately, and prefer kitchen table poly when the vibes fit

Any suggestions?