[tbear69]

My wife's friend's husband, out of the blue, tells her in front of my wife and I that he would be ok with me having a threesome with them.

Because I let my wife have lovers in the past, she told me it was ok with her.

On follow up, the friend tells me she rarely has sex with her husband and gets her fun while playing with guys online and would love a real guy to take care of her needs.
The husband, when I asked if he really wants this backtracks and starts whining.

I have been getting the friend off with my fingers and tongue so far, want to make sure she doesn't get hurt if we do go further.

This past Saturday. I went out with them to dinner and back to their house afterwards. Her husband goes into the bedroom and closes the door leaving his wife and I alone, then asked her the following morning what time I left and what we did. Sadly the answer was just talked.

I'm guessing he is a closet cuck, and wants me to fuck her, but I want to make sure before I risk ruining her marriage. Any advice would be appreciated.