In a conversation with a guy, do girls mention other guys if they are interested in the guy they are talking to?

I've heard, if a girl is into a guy then she won't mention any other guys at all whether it is work related and (especially!) they won't gush or talk about them in admiration. Is that true?
In a conversation with a guy, do girls mention other guys if they are interested in the guy they are talking to?
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