Poly Relationships Dealbreaker?

I’ve been talking to a person for a few weeks and it’s been going well. But recently we’ve be talking about relationships. I’ve asked them if they consider doing poly relationships and they agreed to somewhere down the line. To me i don’t consider myself to ever be in one. It’s not a judgmental thing it’s just not my lifestyle. It is a reason to stop talking to someone?
Poly Relationships Dealbreaker?
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