Hello Amy,
First: CONGRATULATIONS! WHOOHOO! I wish Both of you & Long & Loving Relationship. Never go to bed Angry at Him!

OK, Hubby sounds like he is in 'denial'. Not uncommon & to be expected considering the way his Mom is/was.

Yes, seizures do not discriminate w/ Timing. He could go a Mth & More w/out activity. So, what do you do? Don't tell him Every time he has 1. Time it, follow Seizure 1st Aide procedure & Then write everything down. You Can tell him you are keeping a Journal, but, Stress that it is for your 'peace of mind' & that what you witness & how often will Help! Him & his DRS! I would ask him to keep 1, too, of anything that isn't 'norm' for him. He doesn't want to? Fine, you continue w/ yours! Go ahead & Record him. He won't know & he doesn't to Know or Have to see it. But, his DRS will be very Interested!
You are Now Officially his Caretaker! You are not Over-reacting! He just doesn't want to be Told!

But, What you witness & record will be Valuable Info for his DRS. Remain Supportive! Continue to treat him as a 'normal' person. It's what he wants! It's what he Needs. It will take Time, but, you ain't his Mom & he will Love you More for That!
HMMM? Any Support Groups in your area? Chek efa.org

They will provide you w/ your State EFA Info & you can call to inquire about Groups near you.
Is he on Medications? I'm sure you told me B4. But, be sure he is taking them Same Time Everyday! Introduce him to Juicies, too. Google for Recipes. Basically a Blender & Fresh veggies & Fruit. A new recipe I read today deals w/ Toxicity of meds. And the effect meds can have on our systems. Once a Day. Purple Juicy. They Taste Great! Juicies are helpful for lots of illnesses/disorders. And the foods/additives used are Good for You & Him! Mix 1 for yourself & ask him to Try it.

Don't tell him Why!

Just Try!

If you have problems locating more Info. Let me know. I will share a Ladies Blog/recipe about the Purple Juicy.
http://ow.ly/1OtAv3 ENJOY!