You never said if anything was lacking you your woman now??besides that thing you cant put your finger on? sometimes the "thing" you cant put your finger on is the excitement of something new..if you do truely feel drawn to this woman i think you should take your time and think things through..without contact with this woman..how do you come in contact with her anyways?? does she know about your current woman??
Have you heard of the 7 year itch??
Maybe your nervous about the up and coming wedding?
This woman is part of your childs life too...definately a factor..
I have to add i believe in soulmates..but i dont think we have only one..i also think that if we meet one it doesnt mean we should be together or should live happily ever after..just means we have a soul connection and are here to connect and teach each other something..
Of course there are soul mates that meet and are meant to be together..
This is an extremely heart wrenching decision im sure..take time out..think things through..ask the universe for guidance..do it with sincerity and it will come..
Nobody can answer this question for you..
Take everything into consideration and good luck