You want it.
She wants it.
Her bull wants it.
You do want it, right? You want another man to cum in your wife's pussy, right? You want his bare cock to slide into her tight, wet, needy cunt and empty a week's worth of thick cum deep inside her, right?
Of course you want that. Every cuckold wants that. There's something so beautiful about surrendering the right of every husband - to cum inside his wife - to the man that she's chosen as her primary sexual partner.
He satisfies her needs in ways you can't. That's why he fucks her more often than you do. She certainly cums harder with his cock inside her than she does with yours. That's why he deserves to fuck her bareback, to cum in her pussy, to do what her husband is supposed to do.
What you really want is to watch, right? To witness another man inseminating your wife. What could be more pleasurable for you?
I suppose you might like to lick his cum out of her. What a beautiful way to connect with your wife after someone else has given her a mind-bending orgasm and made her scream his name in your bedroom. You crawl between her still-trembling thighs, put your tongue inside her, and consume the seed of the man she's now cuddling with.
So yes, she can tell him that it's okay to fuck her bareback and cum in her married pussy.