Co-worker fucked SeXStoRY

I was at a party with some co-workers and some of us were pretty d***k. One of them was a hot black woman with E-cup tits, firm ass and sweet blowjob lips.She had said the very day before that she would never let me fuck her. Now she was flirting with me! She didn´t get visibly d***k, but she got one hell of a hangover. She giuded me away from the dance floor and into a unused room. The door closed and she started kissing me and telling me about how much she wanted me to fuck her in the ass. I responded by pulling up her skirt and showing a finger up her ass. To this she responded by going down on her knees and pulled my pants down to expose my hard cock. She took it like a champ but her speed made her seem obsessed. I occasionally had to make her stop so she could catch her breath. Then she went right back at it. I pulled away my cock and ordered her to get nacked. She basically threw her clothes off and gave me a extremely horny look. I pushed her down on the floor and placed my cock, wet with saliva against her asshole. I showed it in and was suprised. Her ass wasn´t tight! She seemed to enjoy it though. Now it must have been the achohol or general dissapointment but I went at her HARD from the start. She moaned and half screamed in extasy and seemed to be building up quite the orgasm. Me? I was far from satisfied. To that end I f***ed her painties into her mouth then completely gagged her by tying a sock over her paintis filled mouth. She hardly protested but seemed to get more excited instead. As she came I was aroused but far from an orgasm. I looked around quickly and found a roll of duct tape. I then ungagged her and instead ducttaped her mouth. She gigled through the tape until I grabbed her wrists and taped them behing her back. Then she started wiggling and seemed anoyed like: "Is this really neccesary?". I grabbed her buttocks and showed my dick into her asshole once again. She didn´t squeel but inhaled sharply. As I rapidly picked up the pace she started moaning through the gag and tried to get lose from the tape. I was now hammering her helpless ass while she gave into the pleasure. She came again and again while my orgasm slowly built up. After she had cum Seven times I shoot my load into her asshole. As I pulled out my dick her asshole quivered and she seemed to be in total bliss. I untied her but she was completely exhausted. So I called for some help and with the help of a coworker we got her to a cab and safely home. Though the following week she did seem a little flirty with me...