I cannot BELIEVE this is happening to me! PART 1

It is 5:20 AM on a Saturday.
I am lying under a thin blanket on a hard floor, at the foot of my Mistress's bed.
Just 10 minutes ago, I was in bed with her. And then, suddenly, there was a man standing there. I recognized him immediately from pictures. He is her lover.
We've never met, this man and I. I was told by my Mistress that he WANTS to meet me and it would probably happen this weekend. But neither I, nor my Mistress expected it to happen like THIS!
So much happened yesterday, which was Friday, October 23rd. I drove up to my Mistress's apartment around noon. She lives about 3 hours from me. We talked for a couple of hours, and then I drove her to work. She had to be at work at 3:30.
I had her laundry in my back seat, so while my Mistress worked, I visited the laundromat. I also bought balloons for my Mistress's best friend, and delivered them to her "from my Mistress".
There was a lot of laundry, and between washing, drying, and folding it, I was busy right up until about 7:00 PM. My Mistress's work shift ended at 7:30, so I picked her up and took her shopping. She wanted to go out Friday night and needed something nice to wear.
We went back to her place and she got ready to go out. Man, she looked HOTTTTTT!!! My eyes were bugging out of my head, and my cock was SO HARD! (Excuse me, we're calling it HER cock. I'm not in a chastity device, but she controls my orgasms and even when I'm allowed to "edge", or stroke her cock. Anyway, her cock, my cock - it's a minor tangent that doesn't affect my story in a significant way.)
So I brought her to a friends house - a male friend - and she went inside without me. She came out with her friend - a very GOOD-looking guy - and I drove the two of them to a club in a nearby town. It was lively! There are many bars and clubs on the main street, and therefore MANY hot young men and ladies.
My Mistress and her friend went into the club without me. This was around 11PM last night.
While they were in the bar, I had an assignment - I was to visit public restrooms, and take a picture of myself naked, with my thumb up my ass. For every restroom I visited, I was to put $10 into an envelope for my Mistress. I was to send her pictures of both myself, in this humiliating position, and the growing money pile.
I managed to visit 3 bathrooms, before my Mistress texted me to come and pick her and her friend up at midnight.
It is now 6:00 AM - I've been typing this for 40 minutes. I couldn't s*leep! But I had to just interrupt my writing to go wake my Mistress. She needs to leave here at 6:15 for work. I'm supposed to drive her again today, but I have a feeling HE is going to drive her instead.
So I just got up to wake her, and she is snuggling with him, her head on his chest. So I woke HIM, instead. "Sir, my Mistress asked me to wake her at 6:00, but perhaps YOU should do that instead?" But she heard me and mumbled something I couldn't make out. At my request, he repeated it for me: "She said you can wake her at 6:15".
I thanked him softly and came back to my blanket on the floor.
Now it's 6:10 AM.
I realize there's a gap in my story from 5:20 AM to now... 6:13 AM. But s*hit is happening SO FAST and in REAL TIME - I don't want to prolong posting this for one more minute...
I PROMISE I will fill in more details SOON!!!
Ok I've just finished PART 2, and its here.