“The night when dos become uno.”What's the meaning of it?

[on the way]

The context:Stevie and her friend Miranda are talking about Miranda's date which is going to happen later that night.And then Miranda says "OK, this can't go wrong with Gary tonight, Stevie, because this is it with him, this is our moment.The night when dos become uno."
So please help me to under the meaning of "dos become uno".Your help will be much appreciated.

 

[bhaisahab]

The context:Stevie and her friend Miranda are talking about Miranda's date which is going to happen later that night.And then Miranda says "OK, this can't go wrong with Gary tonight, Stevie, because this is it with him, this is our moment.The night when dos become uno."
So please help me to under the meaning of "dos become uno".Your help will be much appreciated.

"Uno" is Spanish for "one" and "dos" is Spanish for "two". She is saying "The night when two become one".

 

[Rover_KE]

They are going to sleep together.

Rover

 

[bhaisahab]

They are going to sleep together.

Rover

Yes, and that.;-)