Your story took me on a trip down memory lane son. It is so true that you have both traversed many years of friendship...both far and near...lived together and and have been very supportive of each others personal choices. You have both always been honest and forthright with each other, even if you disagreed with the choices being made, especially regarding relationships. Funny how over the years of being in constant contact, that a new relationship can change things.

I surmise that as others have said, when the novelty wears off, perhaps you will once again enjoy the lifelong friendship you have always had. One thing I have learned over my lifetime is...never burn your bridges...

unless of course your personal perspectives have taken you to a place where you no longer see eye to eye. Perhaps you just no longer resonate with one another. It happens! You literally have nothing in common anymore. Your life may have just become one of happiness, joy and pure positive influences surround you now. Where you were always the one being the encouraging and supportive one, always lifting up your friend who carried an otherwise indecisive outlook towards life. You have now chosen to go into a different direction an only associate yourself with uplifting people....thus your relationship with your friend will now disappear into a distant memory.
That is exactly how life seems to role....just saying! love MoM