The best way to find this out is to ask your friend about it. You can also talk to some of your mutual friends and see what they think.
It could be because he is simply interested in you. He is not aware that you are attracted to his friend, so he has no reason not to stare at you. Usually when a guy stares at a woman he is simply interested in her or he wants to get her attention but does not know how to do it. If you want the staring to cease, because it makes you uncomfortable, you could simply approach him and tell him how you feel.
That would depend on the age difference as it could be illegal. If you two are around the same age and it is legal you simply tell your Uncle you are interested in his friend then he will let you know how he feels.
ask his best friend
Download lie detecting software from the internet. then install it onto your computer, which will monitor calls checking if the people you talk to are lying. Then simply call the person and ask them if they are using you.
you only know if you you dont give it away, bring up the subject and if he quickly changes the subject ... he likes your friend... sorry about that
He is simply afraid of rejection. You mean to much to him and he doesnt want to blow it. Get to know him if your interested and and let him feel comfortable talking to you. Let him know that you like him without actually saying it.
By getting to know him first. You should never jump straight into bed with someone you don't know. If this is what he want's you to do then obviously he is not interested in you as a friend, but a sex object.
Tell him that you're not interested but that your friend is. Answer:Encourage your friend to go for it... and let your friend know that there's no competition, cuz you don't like him
It depends on what that best friend wants. If you know him/her well enough you should know. An inside joke, friendship bonding items or something he/she is interested in
If he seems interested and keeps asking if you and your friend could hang out together then that means he likes your friend not you, what boyfriend would want to be with you AND your friend?? A real boyfriend that likes you would want to be alone with you, he wouldn't want to be with your friends or even his friends.
get your friend a date... not the girl you like
try to get to know him, and if r interested in him you should ask him out