Friend's sister (20F) sucked me off on other sister's wedding

She was happy for her sister but also couldn't help being jealous. I was busy with wedding and she was also jealous of everyone working hard for her wedding. She kept asking me if we should go out and take pictures or eat something. I couldn't move because of constant work.

She finally managed to pull me away and into a changing room of bride. Bride wears like three dress on that day and her other dress was kept ready. We knew it would be couple hours before she comes to change and this one decided to try it on.

I helped her and she looked beautiful. We sat there and she kept the dress on while bitching about her parents spending more than they can afford on her wedding. The talk got to brides wedding night and it got little heated. She asked me to show my D. I was not sure at first but then pulled down my zip and let her pull it out. It felt amazing just being touched by her and seen by her. She then looked at me extremely dirty and bent over my lap and started sucking. It was quite apparent she was not so good with it but it was best bj ever. I had better but I always had to ask for them not this time. I laid back in chair and let her do her thing. Slipped my hand on her breast but she swatted it away. I didn't try again. I came in her mouth and while cleaning she dropped some on the dress. We wiped it but it left a small stain. No one noticed it though. Next day I got her message saying it was mistake and please forget it. I didn't mean to and blah blah. The moment I read it she deleted it too. The bj is etched in my memory though.