sorry, I know that was way too long, lol.
I hope it somehow helps though! Good luck!
You pursue every avenue available. You made vows, keep them if at all possible. If you go for years without feeling a flame and have tried talking, therapy, etc. then you definitely might want to consider a divorce. However, most marriages go through dry spells and this sort of thing goes away with time or therapy. Plenty of couples move past this kind of situation so don't fret. If I were you I would seek some couple's counseling and bring in a third party to help you guys navigate through your issues. You owe it to one another, especially if you have children together.