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this protagonist:
+ wow this guy's phone is ringing
+ it must be his girlfriend
+ i don't like his girlfriend
guess what happens next
just a normal roommate who likes to fantasize about her pal cheating on his girlfriend, nothing strange about that, maybe someday he can cheat on me too
what happens next
she goes to his room and presses her ear to the door in an attempt to discern if he is sleeping with someone else