My gf and I were at a club having a good night out with some friends, she wore a sexy short skirt and no panties. We were on the dancfloor which was quite busy. Some random guy that was dancing near us felt her ass, she thought it was me so ignored it. Then he came back and done it again but didn't let go and started rubbing her pussy and slipped 2 fingers in. She thought it was me behind her so went with it, then she noticed I wasn't actually near her and turned around to see a guy she didn't know finger fucking her. It turned her on so much she came right there on the dance floor. She came and told me what happened and how horny she was so I took her home and fucked her.