Is it ok if I say this? Or should I just drop it after he rejected me once?

I (36f) expressed my interest to my coworker (40m) a week ago. He politely declined me. Yet I feel like we have so much common thing such as personality and life goal.

Should I ask him again by saying "Lets have one date outside office, and if the chemistry is not there then we can go back to being coworker"? Or it won't end up good?
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Thank you. I guess I will just drop the idea 🙂
Is it ok if I say this? Or should I just drop it after he rejected me once?
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