"What if"
Shorty said:
The girl came to your house, and you just realized that she's your friend.
What would you do in this case?
1/ if she was a close friend, I'd make sure with her that the event never took place, and would send her back asap.
2/ if she was just someone I knew, and didn't have any SO whom I knew of, then biz as usual if us two agreed so.
Bumped into a friendly waitress from Hooters years ago at Fan . Well fark, I got instant wood, while she acted surprised. After some small chit chat and explaining from her part ( as initiated by her ) , business as usual

Amazing dances but didn't ask for take out in the end though.