Congrats and welcome! I would suggest to take things slow and don't make things out to be more than they actually are. It takes time to get to know someone else and NRE can really distort reality. Remain grounded and try not to let unrealistic expectations sweep you off your feet. The first poly relationship can be exhilarating and it's easy to get carried away. Try to enjoy it when you are together and take a break from over thinking things when you are not together. Good luck and keep sharing!!
The key to life is in being fully engaged and peacefully detached simultaneously and authentically in each moment.