You come into my room to tell me you had a fight with your girlfriend, explaining that you argued because she doesn't like sucking your cock and hates to swallow your cum! I'm surprised, but I confess that instead I love sucking cocks and swallowing cum, I'm so hungry for it! You start fantasizing about me despite I'm your sister, making your cock get hard fast! I notice your erection, making you confess that you were thinking of me as a slut, persuading me to suck your hard cock! I'm not sure at first, as you're my brother, but I soon give in to temptation, kneeling in front of you! I start giving you a handjob, doing dirty talk and teasing you! I can't resist and I suck your big cock intensely, making you feel my lips and tongue, until you face-fuck me hard! I do deepthroat, handjobs and titty-fuck, I'm so horny you're cheating on your girlfriend with me! I turn into your favorite cocksucker, I'm better than her at sucking it and I want to prove it to you! I keep giving you a sloppy blowjob until you cum straight into my throat, filling my stomach with your cum! This will be our secret, right big brother?