Not to be dumb or anything but wtf am I supposed to say during sex?

My boyfriend likes when I talk to him during sex abt how much I like it or like call myself a slut, and I'm cool with it but I dont really know how to confidently say these things and stuff you know?

Like what do I actually say. I want to watch porn to get like... tips? But he's already established an anti-porn thing in our relationship and I respect it so I'm not sure where to get help from.