She moaned in approval as I fucked her ass. I was getting close to cumming after about 20 minutes of this. I grabbed her waist after letting go of her...breasts as my breath became ragged which allowed me to slam harder and deeper. She moaned and moaned and moaned till I pushed harder than ever into her ass as I moaned and shot my thick load into her ass. She passed out due to the pain,pleasure,and cum. I picked her up and put her in a stall with her panties and skirt down around her ankles to. .. how could you i love you " i tell her tears streaming down my face .I slam the bedroom door and run into the living room flinging myself on the couch crying uncontrolably .I don't hear the two guys leave but i feel Lisa's hand on my back ." Oh Cathy im sorry baby " "How ... how could you ? " i ask her " It just happened ok im sorry " I turn to face her and she pulls me to her kissing me holding me in her arm's but i can smell them on her and taste them on her lips i just push her away ."Oh. "I was wondering if we should kiss," she admits shyly."Does that fall under things siblings should not do?" he asks."I don’t think so. I mean, we've kissed before, haven’t we?" She recalls having seen them pressing their lips together several times throughout the home videos that they were watching, which are still running on low volume on the TV behind her."So that's a yes?" He moves his face close to hers."You smell funny," she laughs."Whose fault do you think that is?" he spouts before. I stopped long enough to reply that guys are always the best at giving head....Then to my surprise he said, “you have a hot mouth girl, I bet that pussy is so hot too” and I could tell he was imagining he was with that girl. I again stopped long enough to ask if he wanted to fuck me? “Hell yes” he replied. I got up and quickly grabbed some astro glide and a towel. When I returned his pants were now off and laying on the floor. I stripped off my sweat pants and T shirt and got up on the couch on.