Awww, someone already posted the link to Love You Madly.

Gai/Kakashi is my OTP and that is probably why the Kakashi/Iruka annoys me so fucking much. I'm biased, but every time I meet someone who ships Kakashi with Iruka they can't explain it. And they can't explain why Gai is not suitable for him either. I am CERTAIN it is because he's not a regular bishônen and that saddens me :(