Is it gossip or fair disclosure?

The thing was I was singing the praises of this one girl I know (she’s an acquaintance rather than a friend) who comes across as really seedhi saadi, etc. The person who I was saying these things to is closely connected to the “seedhi” girl and she filled me in on the truth about the girl and there is no doubting the veracity of the truth-teller.

Like I said, I’ve no intention of telling anyone else - I don’t spread gossip. But my question is about listening to gossip. If the gossip is true and allows you to see someone for who they really are - should you listen to the gossip. I feel guilty for even listening to gossip BUT I also don’t want to give praise to someone who’s not deserving or is a hypocrite, ergo my confusion.