Sort of.
I once walked in to a well known block of flats in South Ken where the beautiful blonde Russian girl I booked let me in and as she showed to her room I noticed someone cooking in the kitchen -
My beautiful blonde Russian ex gf of about 6 mths from 2 years earlier.
(cue a slightly awkward pause)
...

...*
Followed by my somewhat stilted, 'well this is a bit of a surprise...how are you...and hows Mxxxxx (her young daughter)... etc.'
In fairness she seemed to be as surprised as I was - the whole thing is (and was then) a bit of a blur though I do vaguely remember saying - 'see you later' or some such, and her wishing me, 'well have a good fuck'.
Once I made it to the bedroom, the girl I'd booked asked me what had just happened - I explained all (including the bit where, when I finished the relationship, my ex had told me that she was the best I was ever going to get)
(To give her her due, my ex gf had been fantastic in the bedroom, I'd put it down to her being a former gymnast - the penny dropped at this point re the way she described how she made her way from Moscow by 'dancing across Europe'...)
The girl I'd booked seemed to get turned on by it - her subsequent vocals were significantly louder than what I was used to - or, more likely just winding up my ex. Possibly both.
2 cats in a bag situation I guess.
Anyway, certainly one to remember...
* - I had resolved not to use smileys here, but this seemed particularly apposite.