I don't consider myself bi. Im a cuckold that isn't attracted to men but have sucked my ladies primary bull in the past mainly to show them I accept our roles and also to encourage more frequent mating between them, Psycholdically for them, seeing me do that, opens doors for them to feel at ease about not worrying how I feel about their situation and possibly allow the relationship to grow a little deeper between us all now that ive shown them both I understand and accept his sexual superiority and by licking his cock showed them both I know he pleases her better, his cock is superior and I know how much I both like him being around and that we both want his cuck to fuck and cum inside my lady a lot. Sucking his cum is a ritual act of submission and acceptance that you know his cock is bigger, better and she wants him to fuck and cum inside her often and prefers him sexually over you for her needs and ultimately it could grow to other levels such as impregnation and a life time partner. I would love to be present if that did happen , cleaning him but leaving her pussy dripping to facilitate pregnancy should she choose him as the partner with me helping make them comfortable during the breeding sessions and making time after the birth of the baby to give them space. Ultimate submission cleaning them both, helping raise a baby in our family and supporting them both in the decision. But not bi. I dont think I would let a bull fuck me unless it was special circumstances I could rationalize such as my wife encouraging it as a way to show her how much I love her and submit to him over us sexually but that would just be weird and a step im not ready to consider.