What does he want?

Okay so I've been talking to this guy lately and we've both never had a serious relationship. We have only known each other a week and he asked what I thought about sex and nudes. I'm not against them but personally I'm not comfortable with it. He didn't directly ask he just wanted to know my opinion. He was being kind of rude towards my opinion. He seems really sweet and nice most of the time, but I'm confused about his motives