My instincts have NEVER been wrong.
Plenty of times I shushed them and/or ignored them, but that didn't change the facts...
Like the others have said, it IS in the past. Unless you intend to get back together with him, the matter of broken trusts just aren't a factor in your life moving forward, other than to have learned from them.
You can never trust an active/unrecovered alcoholic. You can always trust your own instincts.
*hugs*