Someone had one male friend in past but now she has realised that its wrong to talk to a na mehram so she had stopped the contact but now she has got addicted and its very difficult. Please tell any prayer to forget everything. She wishes to talk to him but as its wrong so she doesn't.

The following steps will help in this regard:

1. Your sister should always remember that it’s haram and removes blessings from one’s life
2. She should try to recite and reflect on the verses of Qur’an daily.
3. She should not miss Dua kumayl every Thursday