Alsalamu Alaykum
I think it is an Issue many brothers and sister here take very lightly, but subhan Allah yet again we see how these private chats leads to fitnah, and these are only the cases which we heard about, only Allah knows how bad is the hidden ones.
without mentioning names, even the chaste sisters find themselves defending their chastity, even though they believe they have not done anything wrong and proved their innocence, yet shamefully there are wolves out their still trying to dirty their images.
I think it should be lesson for all of us to avoid putting ourselves in such situations.
I usually address my answers to sisters because they are more likely to listen and understand.
Sister remember a muslim Girl is like pure white sheet of paper, once it is stained, it will never get as clean as it was