Hi there
NJLady! First of all, its entirely possible that your husband is bisexual... but I think if he was gay he probably would have realized that by now (How old is he?).
However, there's also a chance that he simply has escalated into gay porn, like many other addicts have done. I started with straight porn only at 13... then by 15, I was very much into anal porn... at 19 I think I had escalated to Shemale/Transsexual porn and then it only took another 3-4 years before I was looking at some gay porn too and even talking to men online and eventually meeting them as well.
I still think I am straight however, I do not want to kiss men, hug them, cuddle with them or even caress them or even be caressed very much myself. Its just the penis that holds any interest. Compare that to how I feel about women? I love the way they smell, running my fingers through their long hair, feeling the soft skin of their legs or bum in my hands and giving it a squeeze, feeling their lips on my own, kissing their neck and then down towards their breasts, I love their smiles, I love it all, even a belly with a few extra pounds on it is adorable
I want to cuddle up in bed with them and put on a movie and afterwards just have her lie with her head on my chest and talk for an hour until we're both yawning madly and can hardly keep our eyes open.
So looking at the difference well, I think its clear that I'm straight. But if I'm bi, then I'm okay with that too. If your husband turns out to be bi... that doesn't mean that he will love you any less! And as long as it simply remains a fantasy and he stops watching porn... You should be just fine as a couple
I'd suggest talking to him about it, why does he watch Gay porn? Is it something that came later on in his porn habits? And he think about the things I mentioned above, cuddling with a man, kissing him, caressing etc etc.
Best of luck to you! I hope things work out