I asked a girl to grab a drink with me sometime, but i'm not sure if she gets that I want it to be a date. Whats the best way to make it clear?

We have had some great conversations but not with just the 2 of us. I know she enjoys talking with me aswell but im not sure she knows my intention
I asked a girl to grab a drink with me sometime, but i'm not sure if she gets that I want it to be a date. Whats the best way to make it clear?
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