What would be going on if your bf of 3 years who you were planning on marrying and were practically living with suddenly needed space and when you went out it seemed more like friends than a bf?
Sorry to say,but your bf might found someone new,that's what i
have experienced.
Talk to him to what you feel about him lately.I know woman has a
strong intuition especially a relation with someone dear to
her,especially changes he doesn't doing before.i hope you can talk
it over with positivw result.