Could this help?
It's brain hormone cascade.
Sometimes i feel stupid for being 25 and a gitty school girl over my new boyfriend when im married.
NRE is a lovely brain cocktail of "wheee!" Enjoy it for what it is, but don't neglect your spouse. And know in time, both you and BF brains will lose the "whee!" ness and enter a new stage in the relationship development. NRE can last 6 - 24 mos. It depends.
BREATHE. You will be ok. Keep being honest and up front with both.