If a girl says "I owe you a beer." after doing her a favor. That wouldn't mean anything would it?

Obviously I am very stupid with understanding the opposite sex. Honestly I'm probably the biggest idiot on the planet when it comes to understanding girls. would this indicate any sort of interest?
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+1 y
I forgot to mention this. We live in Canada and she has a (just keep reading) boyfriend who left Canada to play profssaional hockey in Germany. We were at a ataff Christmas party and we apoke a little bit and ahe kept calling her boyfriend an idiot for going over there to play.
If a girl says "I owe you a beer." after doing her a favor. That wouldn't mean anything would it?
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