Hullo and good to have you back!
Hmm, for some reason or other I am thinking of TruckerPete here. Probably because she just posted on how in the beginning of her journey into poly with partner Indigo they were very concerned of how the possible secondaries/OSOs should not come 'in-between' them (see the thread I am talking about here http://www.polyamory.com/forum/showthread.php?t=8687
From reading up on other people's stories on this forum it seems like these primary/secondary distinctions tend to blur and eventually become moot. Being a new secondary has benefits as well - enjoy! NRE doesn't last forever.