I've watched gay porn with my wife many times... But to be completely honest, I'd rather watch gay and transgender (transsexual) porn without my wife, as there's times when she gets incredibly jealous when she sees for herself just how rock hard and undeniably horny some men, and especially gorgeous transgender (transsexual) women make me. My wife's always said she's comfortable, not jealous, and "accepting" of my bisexuality. Ironically though, she's always shown just the opposite of that. Funny thing is though, is that she's also bisexual, and I've been nothing but supportive, truly accepting, and I've even encouraged her to act on her bisexuality whenever she felt/feels the need and desire to do so... Even if that means not including me, and she never has included me when meeting her same-sex needs/desires. I'm ok with that. Her on the other hand... She'll only allow me to act on my same-sex needs/desires if she's also involved.
When I confessed my previous suck buddy experiences to my new wife, she found it intreging. We started watching gay porn and she got off on it. It eventually led to her pegging me, she thought we should find a bi guy for MMF threesomes. Cool! Never found the right guy, but she really enjoyed our MFMs.