Imam Sadeq (AS):
Whoever yearns for forbidden acts and
adultery is the partner of Satan.
مَنْ شُغِفَ بِمَحَبَّةِ الْحَرَامِ وَ شَهْوَةِ الزِّنَا فَهُوَ شِرْكُ شَيْطَانٍ
Man La Yadhur, Vol. 4, P. 418
Imam Sadiq (A) is quoted as saying:
Boys are bounties and girls are merits; Allah asks about bounties but rewards for merits.
Usul al-Kafi, Vol. 6, P. 7.