What is the best way to ask a girl out on a date over Bumble to insinuate it's a date?

I was going to ask her to dinner, but a friend thinks coffee would be better. I'm old-fashioned and I'm not used to these online dating apps.

Thank you in advance!
What is the best way to ask a girl out on a date over Bumble to insinuate it's a date?
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