People question bisexuality. Women who claim the label often are accused of merely trying to raise their rank on the hotness scale, while bi men frequently are accused of simply being gay and afraid to come straight out. (Pun not intended.)

The latter accusation outrages men who truly feel attracted to both sexes, but proving it to opponents is nearly impossible. We suspect the onus of having to do so is frustrating enough.

A 2005 Northwestern study concluded that the physiological and subjective reactions that bi-identified men have to erotic imagery of each sex may not often match, and subjects most often only showed physical arousal when exposed to sexy pics of men.

Despite verbal confirmation that they felt horned up when looking at boobs, too, the subjects' penises rarely reflected the same reaction.

Results showed significant discrepancy between what patients reported going on in their brains and going down in their bodies, leading researchers to suspect that bisexuality might not be a concrete sexual identification.

But new research – also coming out of Northwestern – appears to prove otherwise. This time researchers went to the Internet to find participants, searching websites and other online hubs that cater to bisexual men, and only selected subjects who've had some kind of sexual relationship with a member of each sex.

The NYTimes reports that subjects in the 2005 study were found by advertising in gay-focused publications and relied on a simple questionnaire to determine their sexual statuses.

No wonder they concluded that bisexual men might actually be secretly gay.

You might be bi if you like dudes but this still gives you a chub. It's science, sorta.

You might be bi if you like dudes but this still gives you a chub. It's science, sorta.

The new study also included men who identified as gay and straight, and lo and behold: straight dudes liked titty vids while gay guys enjoyed penis pictures. And what happened to the bi subjects?

They got chubs watching both!

These results bring us one step closer to validating an alternative lifestyle so often pish-poshed by scientists and psychologists and poo-pooed on the dating scene. Not to mention offers men who've identified as bisexual for years relief from relentless skepticism.

We wonder what else they've got cooking over at Northwestern…

Advertising disclosure: We may receive compensation for some of the links in our stories. Thank you for supporting LA Weekly and our advertisers.