To shy

So my last bf was really sexual and straight forward but I found a much better guy that’s the complete opposite and I wanna try sexting with him but I’m scared he’ll be weirded out bc we are like 17 and he’s never done anything like that before. He even gets embarrassed over dirty jokes and I love him but sometimes I wish he was more comfortable around me even emotionally but I just need some tips on how to bring up the conversation of sexting without freaking him out like I think he might be to scared to talk about it it’s not like he doesn’t grab my ass and he’s kissed my neck in a sexual way it’s weird lo sorry off topic so if you read this plz comment tips on that conversation