Non-Threatening Gay Friend

Non-Threatening Gay Friend is akin to a Gay Buddy, sometimes shortened to NTGF. A girl has no qualms about being around a Non-Threatening Gay Friend; he is, after all, non-threatening.

"Man, Jack's been hanging with Emily all night! Is he coming onto her?"
"No, he's just her Non-Threatening Gay Friend. They're discussing prom dresses."