Eye Contact
Its always the eye contact.
If you can find a mans gaze - and he holds it with you - he is interested.
He may not want to get intimate with you but he will show you hes interested in you as a MAN.
No st8 man will hold your gaze.
Adam
PS my gaydar has worked this way for years, and sometimes its taken a few years to prove that the other one belonged to our brotherhood BUT thats the fun of it.
A