Would you be bothered if your best friends slept with your brother/sister?

title says it all

I had a situation when I was with a friend in his living room and his sister walks in, who is a nice attractive girl start talking and your eyes are moving up and down her body. you can tell she likes you to but its your best friends sister so you have somehow stop yourself from trying to chat her up.

Put the internet to work for you.

via Personal Recipe 2629979