Guys says he "owes me a drink"?

Anonymous
If a guy says "I owe you a drink" is it supposed to be taken as literal? Like he actually wants to buy me a drink? Or could it be intended as a form of expression like when someone says "I owe you one"? Does it mean the guy is asking you out? Guys, what would you mean by this statement?
Guys says he "owes me a drink"?
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