No, only for men it isn't. Believing women, FREE women, are not allowed to have sex before marriage in Islam. However slave girls/captives can't be blamed for it therefore you as a man, can screw them before marriage.
The reason I posted this video is that this extreme yet liberal Author and thinker says otherwise. He says, it is OK for both men and women to have sex before marriage if both agree and no rape or infidelity is there. He lives in France and I guess he sees that the boyfriend girlfriend relationships of the west is not against a verse from the quran that he mentions in the video. He claims that since the quran is in Arabic you should be able to interpret it as you understand it. He is an Authority in the Arabic language, obviously he has degrees in Arabic Language.
He has Mohammad's sexuall encounter with "Maria Al-Qobtia" as an example. He said that the Quran does not say, only Men can have Malicat Yameenokom (what your right arm poseses). He said if both agree that they (Boys and Girls) become each other Malikat Yameenokom (i.e. Boyfriend-Girlfriend) provided that the parents know about it and the comuninty too then that is fine.
I like his liberal approach of Islam.
Also (prohibited are) women already married, except those whom your right hands possess: Thus hath Allah ordained (Prohibitions) against you: Except for these, all others are lawful, provided ye seek (them in marriage) with gifts from your property,- desiring chastity, not lust, seeing that ye derive benefit from them, give them their dowers (at least) as prescribed; but if, after a dower is prescribed, agree Mutually (to vary it), there is no blame on you, and Allah is All-knowing, All-wise. (24) If any of you have not the means wherewith to wed free believing women, they may wed believing girls from among those whom your right hands possess: And Allah hath full knowledge about your faith. Ye are one from another: Wed them with the leave of their owners, and give them their dowers, according to what is reasonable: They should be chaste, not lustful, nor taking paramours: when they are taken in wedlock, if they fall into shame, their punishment is half that for free women. This (permission) is for those among you who fear sin; but it is better for you that ye practise self-restraint. And Allah is Oft-forgiving, Most Merciful. (25)