Is it permissible for a girl to turn on the camera on Messenger for a young man to speak to her, while she is wearing the hijab, and does the ruling differ if it is for the purpose of marriage?

Dating between young men and women online with the intention of marriage entails many tribulations and prohibitions. Therefore, it is impermissible to speak with the young man or show him your picture. Repentance and cutting off communication with him are obligatory. If he wishes to propose to you, then let him approach your family through the legitimate channels.