OK, so that's where you learned it then. You were trained (probably by unwitting parents who loved you to pieces and really didn't want to see you upset) to think that being upset by something was not a sane response, but a silly one. And now you belittle your own feelings in the same way.
This is what we do: when we become adults, the child inside doesn't magically vanish. The 'little' you is still in there. She's your heart, essentially. Your emotions. When you were a child, your parents showed her what parenting is: lots of love (probably), and 'shush, you're being silly', when you felt horrible about something. As adults, we don't need external parents. That's what being an adult is: we are old enough to parent ourselves. But what we do, almost infallibly, is copy the example we were set by Mum and/or Dad.
That's what you're doing now. You get questions in your head about his behaviour and your emotional responses, and you KNOW the answer. You KNOW what he's doing isn't nice or right. You KNOW you're actually 100% sane. That's your heart. That's the kid in you, crying to be heard. Crying that this doesn't feel good. Crying because nobody ever listens to her or respects her. Crying because nobody ever has. And then your brain comes in, with its conditioning, courtesy of your parents, and says 'Oh, shush, there's really no need to get so upset, it's really not that bad', and then the poor crying heart of you gets silenced and disrespected yet again, and as the years tick by, this feels worse and worse and worse, until she ends up ON A FORUM trying to get heard.
That's why it's confusing. Your heart is really upset, but your brain keeps saying there's not really anything to cry about. Your heart is in charge, though, as you're probably starting to understand. You can silence her all you like, but it won't make you happy, because she is that part of you that does 'happy'. You have to listen to her. Respect her. Soothe her. Nobody ever has, not even Mummy when she was tiny. Don't you feel sorry for her? Wouldn't you give her a massive hug and just let her cry it all out if you could? Wouldn't you tell her it's ok to feel sad when somebody's mean or acts strangely? Wouldn't you nurture her?