Your issue with getting excessively aroused could be a factor, but your mind issues seem to be even bigger. When I am with a guy I trust, I don't care about what society may think. All of my male lovers have been discrete. Anything we do remains our personal business. I know gay men who I really respect. Being gay has no negative connotation to me. Also, I have no concerns about religious taboos. So I end up being pan-sexual, meaning that I don't care where a lover might be on the gender spectrum. If I trust a person and like them, that's all that matters to me. As I get older, I'm no longer interested in anonymous sex. I hope you find a path that fits your needs.
If you're sitting back and waiting for the world to change and be more accepting of male bisexuality, I'd suggest you not hold your breath on this one and if you want to jump in the pool, take your clothes off and jump on in - and like bisexual men have been doing all along. For as long as I can remember, there have always been guys who are of a mind that if they don't cum in a guy anywhere, then it's not gay and with the key issue of being gay as the great moral evil. To the guys who have said this to me and as an excuse for why they couldn't cum or they chickened out and jerked off instead, I've asked them to think about getting out of their own head about this and understand that if a guy is giving you a blowjob, he wants you to cum and, usually and preferably, in his mouth (or his ass if that's the case). Society's acceptance or continued disapproval doesn't mean jack shit - but doing something that you should and want to enjoy to the fullest means everything. Look, I definitely want (and get) women, too; nothing - and I do mean nothing - is better than pussy. Having said that, trading blowjobs with a guy or we're fucking each other also works and men have been doing this to each other for as long as societies and religion has prohibited it. As far as I can tell, there are more men today than at any other time I can remember who are embracing their bisexuality and maybe even realizing that they're more homosexual and either way, this is a good thing because men are not willing to keep sitting on the sidelines waiting for society to get its head out of its collective ass. If nothing else, it's just another way to have sex and who isn't wired to have sex?