Wife's Holiday Party Fantasy

Last evening, my wife attended her work holiday party. I was unable to accompany her this year, for various reasons. She looked great, all dolled up, sparkly red blouse, black skirt, dark sheer stockings and red heels. As I watched her leave, my imagination ran wild, as usual!

She was barely out of the driveway, and I was already fantasizing about what she might do at the party. I know there are male co-workers who would LOVE to fuck her, and a few that she gets flirty with. So I naturally imagined her slipping away to a dark room with one of these guys, and giving him the blowjob of his life. I could picture her on her knees, sucking his hard cock, while he felt her tits through her silky blouse. Perhaps she would end up on a desk, her sexy legs in the air, panties off, while her co-worker fucks her married pussy. Needless to say, I spent the evening jerking off with these images in my head.
The interesting thing was how horny she was when she got home. She rarely would initiate sex that late at night, but she clearly needed to get fucked (again?)
This morning I asked her about it, and she just said there was a lot of "grab assing" going on, and it made her horny. I decided not to press her for more of an explanation, I would rather be left to wonder........was mine the only cock she had last night?