Hope for healing

Our d day was June 6 2022
I have made great strides in recovery from my husband of 26 years and my partner for 30 years betraying me with a one night stand. He says it’s the only one but I am not so sure he is being honest. I believe he is terrified to admit them if they are there because of how traumatic this discovery is even though I have told him I am still here and as painful as it may be,I can’t heal or truly move on properly until I am 100% certain.
I still have bad days, really bad days and I don’t know how to deal with this. I get triggered and he ridicules me for it because he thinks it’s ridiculous because we have more good days than bad and doesn’t understand. I am not faulting him for this Because truly, he’s never been one to for
emotions, he didn’t grow up in a family that talked things through together, it was each man for himself.
I want to continue my healing! I want to continue our healing! I want the better us, I need to know how to do this on my bad days! How do I find the horizon when the sun has blinded me?