A guy that had behaved respectfully on first and second dates, suggested that we can cook something together. How do I word my rejection in this idea?

I've been on 2 dates with this one guy. He had behaved respectfully for the first 2 dates. Some guys would be putting their arms around me, or hand on my hip, within first 2 dates. This guy held my hand as we walked and had conversations after lunch.

He also didn't try to kiss me like some guys would've done in within first 2 dates. I like that he hasn't been disrespectful, but he suggested that we can cook something together since we both love cooking (it's true).

Then it would either be his place, or my place, and I don't feel comfortable meeting at a private place for a third date, for my safety (even though he had not shown disrespect to me). I also don't go to a guy's place or take a guy home unless I'm in a relationship with him (for my own standard and boundary).

I'm not being unreasonable, am I? I've been criticized before when I told certain people that I wouldn't kiss a guy unless I'm in a relationship with him.

How should I word my rejection in his idea, and what would be an alternative? I'm thinking about attending a cooking class, but I'll have to see if I can find one near us.

Thank you in advance for your help.
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I would like to meet this guy, just not in a private place. What is a good way to reject his idea, instead of reflecting him altogether, or lying/making excuses?
A guy that had behaved respectfully on first and second dates, suggested that we can cook something together. How do I word my rejection in this idea?
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