bullserver_cuck, interesting topic you've raised here. Let me present my view, which seems a bit different that what has been mentioned so far.
I don't know that there is any ONE best way to hhhhhhhhh a cuck. For me, bi actions (as you call them) are not necessary. In fact, not only do I NOT utilize bi actions, I forbid them. I make it clear to my cucked hubbies that I am only "in this for the pussy"! That's how I put it...."in it for the pussy". Really that is my only objective. The pussy. I want the pleasure that only fucking another man's wife...with his full knowledge of it being known...and accepted...by him brings. With his consent. That alone brings a certain degree of humiliation to the cucked husband, in most cases. (I say in most cases because it's certainly not all cases. Some husbands don't desire humiliation at all...AND they don't feel any just because their wife is fucking another man.)
Again, let me say that humiliation of the cuckold is not really what I am striving to achieve. It can be and usually IS, to a certain degree) a by-product of the relationship between the cucks wife and I. And if the cuckold enjoys that...GREAT! All the better.
I try to make my relations with a husband and wife a WIN-WIN-WIN situation. The Win for me...sexual gratification. The Win for the wife...liberation of her slutiness. The wife experiencing the sexual pleasure that being a slut can bring. Sometimes hard to achieve for her in a married situation. Sometimes hard...and sometimes down right impossible. As for the cuckold hubby...the WIN for him...and I don't mean to make this sound so harsh...but the Win for him is really not a big concern of mine. Is that to say I don't care about the cuck husband at all ? Absolutely not.
If I find that a cuck husband actually desires humiliation...I think there are plenty of ways to achieve that.
I'll give you one example. Suppose a cuck husband wants to watch his wife be a slut for another man....in this case, ME. To me, cucks must earn certain privileges. So in this case I might have the husband prepare the bed for his wife and I....turn down the sheets, fluff the pillows. (I said fluff the pillows now...that's all...lol). Maybe light a candle. Then, I would have the eager-to-watch hubby go find a good comfortable chair and set it up in a good viewing point for him. While he is doing that, I might be sitting on the bed, kissing and feeling his wife, while he makes the preparations. I would then have him take his seat. Or, I might have him strip, and then take his seat. Next for the hubby...his wife tying him to the chair. Ankles to the legs of the chair, arms back, with wrists tied behind the chair. Now the fun can really get started. I may have the wife strip for me...or, I might strip her myself....with tied hubby watching excitedly as his wife gets closer and closer to becoming a slut...MY slut. The tied, excited hubby...might then witness the following: me eating his wife's pussy...her sucking my cock...or maybe even a heated 69 between his wife and me. At this point, I might whisper to the wife...and the cuck husband would then see her reach into the nightstand....and take out a blindfold. In this particular example, hubby had not yet earned the "privilege" of watching his wife and I. On this occasion...he only gets to listen....as his wife explains to him and puts the blindfold over his eyes. Imagine what he would be feeling when the next thing he heard might be..."ok, on your knees, slut". Followed by the sounds of her sucking and slurping my cock. I'm sure you get the idea.
So there you have it, a different perspective. Again, for me...only "in it for the pussy".
If the husband does happen to be bi...I find other things can be done to explore that with out the need for direct male-male contact. You can have the wife suck your cock, take your cum in her mouth...and then have her kiss her husband and share it that way. Another example...dildo fuck the wife with a penis-shaped dong, then give hubby a taste of his wife's pussy by having him suck the dong. Imagine that scenario AFTER the wife had been fucked and taken her Dom's load in her pussy.
So back to your original question: are bi actions NECESSARY. I certainly don't think so. In my case, I'll say it again...only "in it for the pussy".
In the end, I think each relationship is different. As they say "To each his own"....and "whatever floats your boat" are terms that come to mind.
Thanks again for raising such an interesting topic. And thanks for letting me present my views.
Regards
DomBull4U
Since the chat room seems to be experiencing difficulties....I can be reached at rcjudge@Hotmail if anyone would like to contact me. Thanks again!