I don't like my husband when he has low blood sugars!

My husband and I have been together for 10 years--he has had diabetes since he was 2.  We have two daughters--4 years and 6 months.  In the past couple of months, his diabetes has really begun to wear me down.  He only occasionally has episodes of low blood sugar, but the recent ones he has had have not been easy.  The last one he had, he was teasing my 4 year old daughter to the point that she was crying.  A couple of times, he has been mean and verbally abusive to me.  Other times he gets defensive when I tell him that his blood sugar is low--he thinks I overreact, but 90% of the time I am right.

It's to the point that I am harboring a strong dislike toward him several days after his episodes.  I wish he would just listen or believe me when I tell him that I believe he is low.  I wish he would not be so defensive about it.  If I tell him that I think he is low, and he is not low then I have to take a lot of grief about being wrong.  I try to tell him that I would rather be safe than sorry, but it goes in one ear and out the other ear.

To be honest, he has been this way from the beginning.  It just seems now I am taking it more to heart and not in the mood to expend so much energy on helping him.  Maybe it's because my 4 year old is starting to notice when his sugars drop, and she is becoming more aware of his diabetes.  Or that he has targeted her when he has been low.

Do all diabetics act like he does--defensive about being told their blood sugar might be low?  Or is this unique to him?  I think things would be better if I tell/suggest to him that he may be low, he checks his blood sugar and snacks.  But the routine is I tell him, he gets defensive and after some nagging he checks his blood sugar or eats.  Again, I think I am pretty good about recognizing the signs--I have even been on the phone with him and told him he was low, and he has been. 

Before I wind down on my rant, I will say he maybe gets low once a week to once every 10 days.  Out of that, he is the one who notices it and takes care of it.  All of this only happens, when I am the one who notices the low blood sugar--he gets really defensive.  Sometimes during his lows, he can be mean, but sometimes he can also be the easiet person in he world to take care of.

If anyone has suggestions, advice, input, I would greatly appreciate it.