He wants me to talk dirty in bed

I have no idea what to say?! I feel awkward like this just isn't me.. Or when we are fucking and he whispers in my ear "say my name" and then I just don't say anything. I don't know what's more awkward, me not saying anything or saying his name like I'm trying not to forget it?? Why would I say his name? I know who he is. I just don't understand the point I guess? That and it's pretty hard to talk without my voice cracking while he's inside me.