What is sexual lust magic (sihr al-shabaq al-jinsi), what is its effect on the bewitched, can the bewitched person become a sexual pervert or sexually assault his maharim because of it, what is the method of treating it, and are there any useful websites in this regard?

It is not within our purview to know the types of magic and their effects. However, the magic of affection (sihr al-atf) can lead to excessive attachment to someone and become a cause for falling into disobedience. The cure lies in maintaining remembrances (adhkar) and seeking refuge (taawwudhat), adhering to acts of obedience, distancing oneself from sins, remembering their danger, and seeking refuge from Satan when he tempts, in accordance with His, the Exalted's, saying: "And if an evil suggestion comes to you from Satan, then seek refuge in Allah. Indeed, He is the All-Hearer, the All-Knower" (Fussilat: 36), and His, the Exalted's, saying: "Indeed, those who fear Allah - when an impulse from Satan touches them, they remember [Him] and at once they have insight." (Al-A'raf: 201). There is also no harm in lawful ruqyah (incantation) or seeking ruqyah from those known for their uprightness and adherence to the Sunnah.