It is prohibited to
talk to women with desire except for one's wife or what he owns of slave girls. This is because these things are ways for temptation and corruption. Things of such nature are prohibited by Shari`ah (Islamic law). Moreover, Islam also prohibits Khulwah (being alone with a member of the opposite sex) and women's traveling without a Mahram (spouse or permanently unmarriageable relative). You have to fear Allah and to advise your friend to give up flirting with women and all that leads to seduction. (Part No. 17; Page No. 53) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.