How to ask a guy to define the relationship?

Without sounding stupid. We have been on dates, kissed. There is chemistry. I have kids he doesn't. He is also 8 years younger then I am. The kids ND ag thing he knew before we began the date, etc. We have been talking for about a month though. Is it to soon to ask for a DTR or is it time to ask? I just want to know I'm not wasting my time on someone I'm falling for. Or if even how I should ask out of the blue
How to ask a guy to define the relationship?
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