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.
You could have him talk to a recruiter from the Marines to make sure that is what he is interested in.
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
An elderly man or woman
It mean that youre very intelligiance
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.
I would encourage him/her to work with motorcycles, if that's what they are interested in.
you can encourage students to read more by showing that even you are interested in reading.... and let them read more interesting books like novels..............