We have found that nearly all the dominant males we/ I have met, identify as straight. Their profiles will list them as straight, as I guess they don't want to ruin the chance of hooking up with straight women, but the ones who do contact us knowing i'm bi, will either say they are fine having their cocks sucked as long as the wife is there or they never have had it done before by another male, but willing to let hubby suck their cock, if it means getting a chance at the wifes pussy. So, not too sure if most of the bulls out there are bi, but a lot we've met were happy to let me suck their cocks if it was within the bull/ hotwife/ cuckold dynamic. Of all the ones i've sucked off in the last 30 years, only one single bull was happy for me to suck his cock without my wife there, so I think they are generally straight, they just like the power dynamic of having a cuck on his knees in front of the wife more than being gay or bi.