Married 2 years, husband doesn't feel "spark."

[Cadet]

I am beginning to think there's no point in even trying anymore.

No trying is HARD!
DBing is Hard.
You need to learn this or it will continue to plague you for the rest of your life.
Your marriage VOWS are for better or worse.
This is WORSE, they don't say when things get worse I will quit.
Trying to do 180's is not natural.

Did you get the duct tape yet?