If he is at all interested I would do my bet to get him to join the carers section of this site... I know it has helped me immensely with my partner- just knowing that I am not the only one!
Also, just explain to him that you have little to no control over your emotions, especially when stressed (if that is the case for you- as it is with my partner). I explained it to our families as 'you wouldn't expect a quadraplegic to start walking just because you wanted them to, Alex is an emotional quadraplegic'! That helped them to somewhat grasp the situation.
I hope that didn't offend anyone- I did ask Alex if that anology was ok with him for our families to hear and it was ok with him...
Tammy