Ended up with cock inside on accident

One night i was in my sister’s apartment alone.She texted me she won’t be home that night so i decided to use her enema supplies so i can ride her lifelike dildo later. After 3 drinks i shaved the hair off my body and I found her underwear and slipped into sheer thigh high stockings, garter, black sheer thong and heels.I slathered lotion on my smooth hairless flesh and admired how sexy i was. Then her boyfriend started unlocking the front door and came in the house ,he was looking for my sister going from room to room, then opened the door drunk as hell but he didn’t turn on the lights. A paralysing fear overtake me. I could not allow him to see me dressed in a girl’s clothes. He mistaken me for my sister with lights off his fingers started touching my asscheeks as my face was shoved in the pillow.While his fingers were shoving against my sister’s panties almost entering my butt I got panicked he will find out i was her 18 years old brother. I was so nervous and distracted by the fear that he will find out that i didn’t realize he was about to take my virginity as he forcibly pushed his finger inside me. I barely resisted from moaning.Then he started fingering my virgin ass  and i thought to myself “he is just teasing me there is no way he wants to”… Then i felt his hard cock pressing against between my lubed asscheeks .He wanted to make love to my sister, but the person he was about to put his penis into was me. I panicked and said quietly with a girl voice “no wait dont put ahh” it was too late now i felt his squishy cock head inside me. He then pushed his 9 inch dick deeper inside me until i felt his balls were slaping on my ass.My legs were shacking through the sensation of his thick hot meat entering my insides. Jared was sliding his cock up and down as i moaned under the pillow he spread my asscheeks . My heart raced as i lay beneath this guy. His cock fully erect balls deep inside my helpless ass. I was so hopeless that i allowed him to pull my butt high in the air .Lengthening my canal and allowing his young, veiny cock full entry. With my ass high in the air and my face jammed into the pillows I felt like a cheap whore ,but I was not like one of those guys who dressed like girls and let men fuck them.