A friend in need is a friend indeed

Although Dante's just a friend, he sees a unique opportunity to put Aliya at ease AND get a little something for it as well. He delicately suggests that THEY can have sex so that she's not a virgin anymore, which means the serial killer won't target her. While Aliya is shocked by the suggestion, since she's never seen Dante in such a way before, it IS a good idea. Despite her initial reservations, with Dante's promise of doing whatever it takes to keep her safe, she's game.