There are many different types from what I’ve read about it. There’s the type that MothTheSpookyProtogen just said, there’s also the type that doesn’t prefer to be in a relationship with multiple people but wouldn’t also dislike it, and this last one I’m not sure if it’s actually a type of polyamory for sure because I’ve only read about it being connected to it once, but it’s when you love one person enough and want to be in a relationship with them, even if it has to be with more than just them