TBH it's just about perfect. I NEVER outright ask somebody if they are gay but I can tell within the first 5 minutes of meeting someone. The closeted ones are easy as well because they often times go out of their way to hide what they know wold bring attention to their sexuality.
First there's the voice, I don't know why but ALOT of gay guys just have a certain tone to their voice.
Then there's the subtle movements, especially the wrist and neck.
Lastly, regardless of how straight they act eyes never lie. Look who he's looking at longest.
Before you know it you know you've found a sistren
