Pain/torture

My boyfriend is into pain and is a switch so wants me to be dominant at times. I on the other hand am very vanilla and am 0% sadist. He really wants to do cbt but it’s 100% out of my comfort zone. What are some light pain things we can try so that I’m not feeling forced or uncomfortable but he’s still getting pleasure? I just don’t want anything too extreme. We’ve never done anything like that before anyways so starting off light is best I think

Update: the biggest reason I don’t want to do cbt is I don’t want to damage anything and I know it can be dangerous. We’re only 18 and I do want to have kids one day with him