In the context I’m not a fan of labeling, it seems however prevalent…
If anything, I consider myself ‘sexual’ - I enjoy sexuality, sensuality, eroticism, kink, and fetish thoroughly. I’d never have identified myself as bisexual, mostly having seen no need. I’ve only rarely identified myself as hetrosexual, on the basis of some significant need to do so.
Introspectively, in contemporary terms, I would likely best be labeled as ‘pansexual’.
In related labeling exercises, I am technically, definitionally a cuckold. I more identify as the husband, and full supporter of a hot, sexually liberated wife.
I’ve seen her have sex with many, many men over the course of our relationship. I’ve watched, I’ve participated in various capacities, I’ve directed the action, and so on. Invariably, as our exploration continued, our horizons broadened, there was male-male contact.
It was sometimes inadvertent, or unavoidable (ever tried DP?). Other times it was overt, deliberate, driven out of desire and lust.
There are many men who are homophobic, or “completely heterosexual” - no judgement, just a fact. There are definitely guys that are sexually turned off by other naked males.
As for me, I’d rather watch my wife fuck (or be fucked), by an open, virile male, a cock I’d suck myself (it’s only fair). Even better, guide his rigid cock into her, listening to every delicious sound. So if that makes me ‘bi’ - so what?