You say you are not physically attracted to him anymore. Does this goes both ways considering the amount of times you guys have sex?
How is the counselling going? (Haven't rtft)
Maybe both join a gym and healthier eating choices . Whip yourselves into shape a bit more? (Not saying he is thinking you are not in shape op!!! But just incase)
Haircut? New clothes
Dress up foreach other a bit.
But this emotional connection that you spoke of is veryyyyyyy important too. Finding each other somewhere in the middle. Obviously considering you are both different and you cant chance someone 180 degrees.
That the spark you speak about. Yup. I can imagine aftee 18 years it being gone. But the thing is. Do you want it back? ? Because all things above is just about trying to find that again
To find that spark again. That you once had. That led to you guys starting a family at a certain point.
The question is do you think your future is better with him in your life. Or without him
And don't do the "staying together for the kids ". It is not fair. To ANYONE. But mostly to yourself. Living in a selfimprisonment of a lust & spark lacking 'love'life. Living a constant lie for the sake of what?
Your kids will still love you AND their dad when you guys are not married anymore. And it would open the door wide open for you to find your "ratpark" (rats in a cage with no toys go nuts/depressive . Rats in a cage with toys/snacks/etc are happy. Learned this from a comedy here in australia hahah). Find Your "bigkid playground". The thing that makes you shine. That makes you ecxited to be alive.
So figure it out. And whatever way you go: do it for 100%! If you fight for your spark: FIGHT!
And if you choose you: choose YOU.and own it.
Good luck op. I can't imagine how hard it must be