General Anxiety Disorder

[kddani]

I just found out that a guy that I date has General Anxiety Disorder. I've known him for months, we've dated off and on, and he just told me tonight.
We have times where we get a long great, and other times where we've had huge arguments over stupid little things. I've been so frustrated with him.
This explains so much to me now. But i'm not sure with how to deal with it.
He's not on meds, he says that he has a more mild case of it. He refuses to take the meds, actually, b/c of the side effects and etc. He says it comes and goes.
If anyone has any advice on how i can deal with this, if you have G.A.D. or have dated someone who has, i would REALLY appreciate your advice. PM me if you don't want to post. Thank you.