Welcome firelights....!Well, lately I have been in an intuitive mood...so I will just say this to you...
If your gut is telling you that there may be something more between your friends(even eventually)...than let it happen...and silently wish your friend good luck, love and happiness!!!
Personally, being insecure because you are afraid he may like your friend more than you is not a positive trait. Negative Kharma for sure! So, let it go...he isn't for you probably in the first place or else you would not be feeling such questioning thoughts...just give out happy vibes and trust that your intuition has already answered your question.
Astrologically speaking, maybe some of the other knowflakes will have comments. Today I am in my mode using my intution.
GemStar