Worst hookup of my life! I can never tell anyone what I’m about to reveal here. Got invited to a Halloween party by a friend of a friend. I copped a high quality Spiderman costume. By the end of the night I was pretty hammered. I’m horny AF, and also drunk. That’s when I spot her. Spider-gwen. She was dancing by herself. I got an extra drink, got behind her, and started dancing with her while also handing her a drink. She took the drink, and she turned around. She held my arms then we started dancing. After a few minutes of this, we relocated to the hallway. Her mask only came down past her nose, so I could already see her lips, and she pulled up just enough to kiss me. We made out for a long time. Gwen pulled me into an empty room. I pulled my costume down, and I got on top of her. We were making out the whole time. I got her costume off mostly, except for her cowl. My mask was still partly on. Gwen grabbed my dick and moaned “Fuck me already Peter!”. I stopped. I took off my mask. Gwen screamed. “Johnny!”, she took off her mask. I died inside a little. It was my big sister. Not step sister. Not in-law. REAL full blood-related sister. I guess she didn’t realize she was still clutching my dick. I yelled at her to let go! She jumped up and got dressed. So did I. She said this never happened. I just kind of mumbled an ok. Breakfast was awkward that morning.