I have seen stories of duals who have taken many months, possibly years (like some SLI-IEE), whereas in some cases like the one described by a well-adjusted photographer had a magic instant love like reaction upon meeting his dual ("I know it's strange, but I love you", he said after meeting her for the first time!). So I am asking how long does it take for duals to enter their "honeymoon phase" and to just click. I mean, when other people can notice the living nature of dual relations.
Please, tell me everything you know about it.