((((hugggggg)))) I sincerely hope he reflects on how his behaviour has let you down.
None of us is perfect, and I've lost my temper more than once, out of frustration. I get that he's in pain.
But it is definitely not okay to use it routinely as a way to alleviate emotional turmoil. It will not work for long, and will eventually destroy all trust.
Wanting better for you!....