Been with my wife 12 years. Both mid fifties. In that time she's had a bit of a roving eye; one affair and numerous online cyber sex type connections. I've sort of got used to it so I don't mind so much as long as I know but recently, she's met someone online whom she'd like sex with. Seems a nice guy, lives in Kent so not a million miles away and similar age to us.
I thought she'd want a threesome but mentioned cuckholding. We've talked about it at length and whilst I don't want to stand in her way, I'm not sure. We have a good relationship in so many aspects but don't know whether if its a step to far.