The answer is 8...
To achieve the number 8, there are certain rules regarding sexual partners you dont have to count.
You dont count ..... them if....
They dumped you
They didnt meet your friends
They didn't meet your family
You don't know their last name
You don't know their first name
They are ugly
They weren't of legal age
You weren't of legal age
It was a one night stand
It lasted less than a week
You were drunk
They were drunk
So thats it.... I've had 8 sexual partners...