In the beginning they just texted "Hi", "Hello" or "Good morning". They were not much friendly with each other as they had some language difference in between them. So it was not more convenient for both of them to talk properly n freely, as how we speak with their other friends.
They both were studying in same class but at different schools. They were in 10th grade where they need to face a tough exam. This was other reason for not talking more as they both were busy in the studies.
Now comes the exam time, during exam days daily they both wish good luck for each other daily. Finally the exams finish. It was the vacation time. They both spent their whole vacation in just talking with each other. Their morning begins with a good morning message n whole day they text each other. Now both were feeling quite comfortable with each other. They shared all their deep dark secrets. During this he came to know something about the Spu's past. Her deep dark past, which was not much known to everyone.