y-you w-want a t-threesome with your gay brother??
she wants a threesome btw so uh i dont know if ur like her-
i don't think the sister wants threesome lmao she just find it interesting when he sees his brother acting like that cuz hes usually stoic
but if she did want threesome i think she would have started getting turn on And Started touching herself idk
the sister doesnt want an exact threesome she basically wants to be part of it but not getting touched or fucked like holding her brother while he is getting fucked
（￣へ￣）