I have an observation that most, if not all, cuckolds are bisexuals in various degrees. Some may just be bi curious, who would not have any overt sexual relationship with the guy ( the 'Bull' ) while some may be wholly into guys - sucking and getting fucked by the other guy! Either way, their certainly is some sexual tension between Cuck and the bull. In many cases the Bull too doesn't mind having sexual contact with the Cuck and is thus cannot be called 100% straight ( - as most would like to portray to the world, and even to self).
There is not to make any judgement : if anything, bisexuality, IMO, makes the cucks ( and such bulls who are into guys too) the blessed lot, who can swing both ways and thus enjoy wider experience :-) What is your take on this?