No. Everyone needs to get the fuck over it. If a guy has to administer first aid for a bullet wound I took to the chest, he might see my tits then, too. Nudity does not equal sexuality.
What's proper in the shower? Uh, lather, rinse, repeat, and that's about it.
Then they need to learn to grow up and handle their business lives separately from their personal lives. If they aren't mature enough to handle that, they're not mature enough to handle a rifle, either.
There are already gays in the military. There are already gays taking communal showers with straights. They are already living together. Gay people are not sexually deviant in any larger percentage than straight people are. Gays are not looking for any excuse out there to ogle or feel up a straight person. Homophobia and stereotypes about gays are the problem, not gay people.