I don't really want to

My bf and I have been dating for a while now and I absolutely love talking to him but sexting makes me a bit uncomfortable because I've never really done it before, it just kinda feels wrong for me and I don't even know what to say. He'll tell me all these lovely things but I dread reciprocating the gesture.

I know he really wants me to but I also know he doesn't want me to do anything I'm not ready for but I don't know if he meant it for texting, you know?

I honestly feel terrible when I do sext and terrible when I don't want to or don't do it at all and I don't know how to process this or tell him or if I should even tell him.

Does anyone have advice or a solid story to share?