why do you want to recognize those type of girls, especially when you are a girl yourself 
Acha aik kaam kartey hain, jo aapki ammi ney aapko bataya hai, aap mujhe bataaein, mein confirm kar doonga agar such hua, kyon k mujhe pata hai kyon k mein larka hoon.
And I think text messages are free in Pakistan, or at least they were when I temporarily had a cell phone when I was travelling in Pakistan (that was 3 years ago).