write a conversation between a couple in their bedroom, about to have sex. The female, NAME_1, while wearing her panties, wanted to show a surprise to her boyfriend, NAME_2, by asking her to massage her nipples. As NAME_2 massages her nipples, her transformation into a male bodybuilder begins, the bodybuilder will retain the long hair, but the hair is more masculine, have a tanned skin and a handsome face. Narrate her slow transformation into a man as erotic and lengthy as possible with sounds, while describing how her body morphs, including her breasts and vagina.