Knowing cousin is family makes me want him more

Hey Sis, This is a really funny story but then ending is really hot. I went to the bar the other night and around midnight this older guy walked in. He started buying me drinks and before long we headed back to his place..... I know I'm such a slut when I'm drinking !!! By the time we got through the door we were all over each other. I didn't know why at the time but he seemed oddly familiar. We ravaged each other like animals and when he finished up on my tits I realized who he was. Remember the cousin who used to buy us beer?? Well thats who I was fucking and knowing he's family makes me want him more. Is there something wrong with me? Anna Bell