Something to keep in mind for future relationships: when you first meet someone and get that excited feeling, it can feel like love. But since you barely know them, how can it be true love so soon? Love takes time to build, and it's based on trust, going through some hard times together, supporting each other. It's not just the romantic, sexy, gooshy parts.
At first it's actually infatuation or "new romantic energy," aka the honeymoon phase. It's based on novelty and hormones. So maybe next time don't be so quick to declare love.
One more thing, polyamory doesn't mean a single person is "added" to a couple's relationship. It doesn't mean a couple needs to share one partner between them. It means loving more than one person, with the knowledge and consent of all. You could be polyamorous and be dating two people independently, who don't even know each other, may never have met. Some bisexual people think they need to date an already established MF couple to get to have sex with both genders. That's not true, and in fact, trying to do that is almost guaranteed to fail, as all three relationships grow and develop on their own.
Let's call your couple Bob and Alice. The dyads are:
Bob + Alice
You + Alice
You + Bob
Then there is all three of you together.
You might prefer Bob to Alice. You might prefer Alice to Bob. Alice and Bob may be getting along great, or they might have issues between them. Alice might love you, but Bob just wants to shag you. You might like Alice a lot as a friend, but be more sexually attracted to Bob.
Et cetera!
In a V, where you are the hinge, dating two people, one relationship doesn't depend on how your relationship with the other is going. Let's call them Taylor and Tiffany.
You're hot for Taylor; you have vigorous sex every day. But you don't have a ton in common.
You're more emotionally connected to Tiffany, but you only have sex twice a month. You and she share a lot of interests. You think she's pretty, but eventually the sex slows and stops, and you become more platonic friends. This change does not in any way affect how things are going with you and Taylor. It's all much less complicated.
If Taylor and Tiffany were a committed couple, your changing feelings for one could have repercussions on the relationship with the other.
This article explains this more:
I get a lot of people new to polyamory insisting that they must date together, or meet people together, because it "will be less complicated." I see this in comments on social media, on dating app profiles, on couple's profiles on social media (that black and red one that starts with an F...
www.readyforpolyamory.com