I felt the same way when I started dating Mono. I was so full of NRE and so excited and in love... I felt guilty for it. I wrote a thread on that way back last year... if you care to find it... last spring sometime.
Anyway, it wore of in time and I managed to keep it all in check. I decided to trust and make things seem as normal as I could around my husband. I didn't think it was fair to be so crazy with NRE around him... I saved it up for moments when I was with Mono. That seemed to help normalize things faster for us and actually made the NRE last longer I think... still in it most days after a year!
Have fun and good luck... these are the most fast moving, exciting and life changing days ahead. At least they were for me