How did y”all start a poly relationship? Any good experiences out there?

Those that have tried poly or want to, did it start as a fantasy? Did it start spontaneously, or was it planned and you just knew it was something you wanted to do? Just wondering about experiences and if it’s something that can last? Maybe if it’s a dedicated relationship and not so open such as a throuple?

How did y”all start a poly relationship? Any good experiences out there?
How did y”all start a poly relationship? Any good experiences out there?
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