Will texting with two girls in the same dormitory be discovered?

Well, it depends on your content ... if you plan to fish on both sides and talk privately, you won't be found out. Humorous words will be miserable. ...

If you like one and say something to the other, it will usually reach your target's ears.

The situation is the same as above, but if you tell that person not to say anything, maybe one day she will spill the beans.