My 19 year old sister Marina has a fucking loser boyfriend who is always stressing her out. I have no idea what she see’s in him. He’s always calling all the time to check on her and make sure she’s not messing around with other guys. He even thinks she’s still a virgin, what an idiot!!! When I heard her in her room talking to him I thought I try and cheer her up — with my dick! Her loser boyfriend even called again while we were fucking and my sister answered the phone. Marina told him she was busy working and to call back later. I kept pounding my little sister’s tiny pussy and then the loser called again. I told my sister to answer the phone while I fucked her. She kept telling him how much she loved him and how she was saving herself for him like a genuine good girlfriend. I can’t believe the retard actually bought it! I finally pulled out and came all over my sister’s little butthole. Marina might not be the best girlfriend… but she’s definitely the best sister ever!