Sister's Obsessed Brother

One day I accidentally walked in on my brother as he was masturbating. That alone was embarrassing enough. But then he asked me to help him! No way! Afterwards, I told him I didn't want to talk about it. I wan to forget that it ever happened at all. But he confesses that he has been obsessed with me, and that's why he has chased all my boyfriends away. He confesses that wants to be the one to take my virginity. I get that he loves me, but begging me isn't going to work. Still, how is it that I now find myself with my brother's face buried in my pussy... It feel so amazing. I know we shouldn't go any further, but I just can't help myself...