I'm also a "hetero dude" (what a shitty expression), and I could care less if my wife saw my looking at pictures of dicks on LPSG. I actually posted my profile as 20% gay, which in my eyes, just means that I'm friendly with everyone, and I don't harbor a paranoia of "gay themes" here in LPSG. The percentages mean nothing, as I'm sure nobody took out graph paper, tabulated how many times they had "banged babes" versus being "ridden by studs", and then calculated the exact percentage. I've never had any sexual relations with another man, but hats off (and pants off) to those who are, as the sex they're having is every bit as valid (and probably hotter) than my sexlife.
Worrying that my wife might think I have "gay tendencies" would only bother me if I considered having "gay tendencies" to be some sort of insult. I'm hoping that everyone using this forum is beyond the petty bullshit of worrying about labels.