Humiliated after work discussion

So my partner and I work together. Today a few coworkers were having a discussion about whether or not porn is cheating. Out of 8 of us (most were men which I think is awesome!), only three said it was NOT cheating. I 100% think it IS cheating, so I said that. However, my partner said that he thinks that it’s not cheating.

Of course, he’s allowed to have this belief as long as he’s willing to respect my boundary. He’s only broken this boundary once the entire time we’ve been together, but it absolutely wrecked us for what felt like years. In reality, it’s been 6 months since and though things aren’t always perfect, we’re in a way better place now. I just don’t understand how he could still see it the way he does after he experienced first hand the way it broke me, our relationship and the trust between us.

It’s just so humiliating that he expressed his beliefs to our coworkers/friends after me saying mine. Maybe i’m overreacting, but to me it’s like screaming “(my name) is such an idiot! She’s dating someone who would willingly and openly cheat on her, yet she still stays with him!” The least he could have done was kept quiet on the matter.

What tf am I supposed to with that? I’m so embarrassed right now. My shift is almost over, but i’ve started a text war and who knows what it’ll be like when he gets home. Now I kind of wish I would have let it be, but I was so beyond pissed off in the moment.