Answer
I'm no expert in this area at all but, I think, if you are interested enough in someone, you will find a way to let him know. I would think it comes naturally. Body language says a lot to a person, the way you look at him, etc.
If youre unsure then get one of youre friends or one of his friends to ask him who he likes or if he likes you
if youre a man, get her a girlfriend. if youre a woman: do the same things a man would to a straight girl, or a dildo.
Depends if youre an adult man or woman. If youre their child, youd have to be a girl to do that.
to find out if you like her and if youre already going out its to find out if yourstill interested in her
You could have him talk to a recruiter from the Marines to make sure that is what he is interested in.
It mean that youre very intelligiance
An elderly man or woman
You don't he either is gay like you and is interested in you or he is straight you can't change sexuality
anything worth doing isn't easy. but things are a lot easier if youre interested in them and enjoy them....
School of rock.
tell her!!! if she's not interested what have you lost? youre only here one time. make it count.
Just be simple and straightforward: "I'm not interested in getting with a married man."