Welcome to the forum! I would say that this is just like any type of relationship. Take time (18 to 24 months) to see of the relationship(s) are secure and lasting. If they seem to be strong after that much time, then you could consider sharing- but only with people who are open to non- monogamy.
I mention the idea of non-monogamy first. If the person I am wanting to share with is against the concept- I do not share my situation with them.
Even if they are open to the concept doesn't mean that they will be happy for you.
You may want to do a search on NRE. I suspect that is where you are and that is great, but it makes us think that we want to shout to the world and the world doesn't always want to hear it.
Enjoy your situation, it sounds awesome! Just remember that you can develop and enjoy your relationships without having validation from everyone else!
The key to life is in being fully engaged and peacefully detached simultaneously and authentically in each moment.