So, if The Bull told her that she needed to make love to his cock and swallow his seed she wouldn't do it? I get that she's been reluctant in the past, but this seems to open a whole new dynamic. If she loves him and would do anything for him, I would think that would include oral and anal.
You say that you worship your wife and would do anything she asks. Once he's pushed past her barriers, might that not include her wanting you to clean her up? What if she asked you to wear a cock cage?
You seem to be topping from the bottom, but you need to be prepared for him to unleash her dominant side with you. You can only control this for so long.
Never say never.
No doubt you make good points. It's now been over a week, so I have more insights. I think I did mention elsewhere in the post that I felt certain she would indeed do anything he wants at this point. I haven't commented here for maybe 5 days now, and even more has happened, so I think I can say that she is definitely enslaved. She is now wearing an elegant black color on her neck, with his initials on it. It is sexy and small, so that she can wear it anywhere without looking inappropriate. They got it for her this weekend, while spending time alone together. She said she won't take it off.
Yes, it is true that I am topping from the bottom, even now, and I do understand that there is no guarantee that I can continue that. I don't really want that actually, as I want to experience the total loss of control. I'll talk about the limits, but first...
On Sunday we were all at our place, and he decided it was time to train her on oral and claim another 'first' with her. She's never swallowed or been throat fucked, etc., and I had already told him these things. He was destroying her as usual, and then started making her beg for him to train her... "Do you want to please me with your mouth" he said, and she answered yes. He kept asking until she was begging. And then he did. He wasn't very artistic about it, as he took advantage of her eagerness and trying to throat fuck her as soon as possible. It was very hardcore and I was surprised that she endured and succeed, and was actually cumming from it without him doing anything else. She choked and cried and loved it. Her face was a cum covered disaster in the end as she struggled to swallow what she could. He made her suck and lick and wipe all of it into her mouth to swallow it all eventually. She seemed partly horrified and shocked, but still so eager to serve him. It was beyond our roleplaying and fantasies.
So yea, to your point, he is unleashing her in ways neither of us imagined. It continues to escalate, and I'm guessing he will do anal just to take her virginity there too, and bind her further to him. He's addicted to her too.
As for a cage or cleanup, I'll give you a few reasons why I think it's almost impossible: 1) I really don't think he or she have any interest in those things; 2) I'm turned off by them; 3) I do have previous experience in relationships before I met my wife, I had an awesome partner that wanted to do other things like that, and peg me, see me with men, etc., and there was simply no way that I could ever get close to such activities. Our relationship was still awesome, and those things were playful jokes between us. I was grateful that she tested my boundaries. Anyway, we parted for various other reasons on good terms decades ago.
With all that said, of course my wife might just brake my brain and have me doing anything. There is no doubt that part of this intensity is due to her sadistic and dominant kink being fulfilled. So who knows. But I don't see that happening. This lifestyle has infinite varieties as defined by all the unique couples that pursue it. I'm in a comfortable place right now, even though I'm uncharted territory.