At that point the tone was needy and a bit desperate.
And I'm sure the conversation was so NOT what you wanted to have.
But that whole end of the conversation did not come across as good to me.
Maybe it's pre-wedding jitters.
Maybe she caught an interest in this other guy, felt bad about it, then wondered why she should feel bad about it.
Time and space.
Remaining her friend. Not, as Frank or another pointed out, the guy who is going to rip himself from her life supposedly to "give her space" but in her mind because you feel scorned and left behind.
All the DB'ing type stuff applies here.
Don't let your emotions override your common sense. You are skilled in this area, use them.
Best wishes,
Bill
"Don't tell me the sky is the limit when there are footprints on the moon."