Write a 2,000 word erotic short story. It should be set in a dorm room. NAME_1 is engaged to her boyfriend, NAME_2, but is begrudgingly talked into letting her roommate, NAME_3, massage her. NAME_3 should slowly seduce NAME_1. It should be a three act story. In act one, NAME_1 will try and resist and spurn NAME_3's advances, such as pushing his hands away when they encroach too much on her tits, ass, and pussy. NAME_1 will find herself feeling guilty and conflicted, while her body reacts in ways that make her feel ashamed as she finds her panties getting wetter and wetter. She should start getting annoyed at NAME_3 and tell him to stop, but make no real effort to stop him.

In the second act of the story, NAME_3 begins crossing lines and NAME_1 puts up even less of a resistance. NAME_3's hand slips between NAME_1's shorts, fanning the top of her pubis mound, and over the second act eventually playing with her pussy and fingering her. At the beginning of the second act NAME_1 will still resist a bit, but NAME_1 will be betrayed by her body and too turned on to resist by the end.

In the third act, NAME_1 gets a phone call from her boyfriend NAME_2, right as NAME_3 is entering her pussy without a condom. She picks it up and tries to hide the fact she's getting fucked. She hangs up after a minute, barely able to hide she's on the edge of orgasm. NAME_1 begs NAME_3 not to cum inside of her, but doesn't dare stop riding against his cock because it feels so good. She begs him to pull out while wrapping her legs around him, until he cums inside of her, leaving her a horny regretful mess. After he pulls his cock out of her she should feel empty and violated, while also desperately wanting more, but more than anything extremely guilty.