His favourite porn is making me uncomfortable

So I(25F) and my boyfriend (33M) are watching a movie on his phone. He was scrolling through YouTube and a video that is obviously porn pops up, so I ask him what video that is. He says it's a "birthday surprise" he has planned. <br><br>I'm like, "That's just a porn video, right?" And he's like, "Yeah!" <br><br>The thumbnail has two white women and a black man doing whatever. So I said, "What's your favourite kind of porn?" And he says "BBC" (That's big black cock for those who don't know, and it just stands for interracial porn)<br><br>I then said, "Wait, so you're attracted to black men?" And he's like "No, I just like the porn". I'm not sure how to feel about this, but I'm going to ask him what he likes about BBC porn and why it's his favourite. I've never seen someone talk about BBC porn before so I don't know how to react to it.<br><br>Edit: I'm halfway considering that it's just racism fuelled by ignorance. He had no problem with any of my questions and is open to having a conversation about it. He was like, "I don't know, I just like it", and I'm like "Noted".