F4M] My Sister Cheated On You? Good, You're All Mine Now [FDom][Kissing][Making Out][Good Boy][Encouraging][Friends to Lovers][Cunnillingus][Blowjob][Deepthroat][Creampie][Cowgirl][Doggystyle][Teaching Sex][Caught Fucking][Fuck Me In Front Of My Sister][Secret Crush][Comfort][69][Listener Orgasm x2][Performer Orgasm x2] A wonderful and fun semi-cheatjng revenge script by u/Misashinoya