You asked:

I know you are close to your friend, Sandra. I know you do love to go out, well, if you want to take it further... I wouldn't mind, you know? I give you permission to have sex with her.

"You want me to have sex with Sandra?"

"Sandra? My best friend from high school? The maid of honor at our wedding?"

"Well, yeah...", you say

"She is hot, but I mean, honey, she is my best friend. I don't see her that way, you know? I am afraid she would break up our friendship. I wouldn't, but she might"

"But..."

"No, I won't risk it. Sorry. Let's watch some action movie to let out my frustration, and see how we can recover from this"

"Recover?"

"I am hurt. Not seriously, but come on. Think a little..."

"Sorry"

"Yeah, you better be sorry."