Do a seach...it's all right here.

I would do a TER search (click Reviews then Search Reviews) select Las Vegas as your city and then select any preferences you might have as far as age, hair color, body type etc. Then (if you have paid the $20 for a VIP membership) under the category "Actual Services Provided" select "two girl action" and use the drop down to select "Yes- Really bi" and click Search. I would bet that pretty much any of the ladies that pop up under this category would be willing to see couples, check their Web site to confirm! Good Luck
Chase