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.
get your friend a date... not the girl you like
ignore them and just pretend you do not know them
Your so-called "friend" has installed spyware, or "hacked" your computer.
My friend is the neatness person I know.
Example sentence - She will never have a friend because she doesn't know how to be a friend.
I know why because we have been using them all of our child hood
You know when your friend is using you is, when she, or he starts to act a little suspicious, and when she starts doing things like hugging you or something in front of someone else, but you know that it's just to make the other person jealous is when she, or he looks at someone else
You could probably tell by seeing what your friend is doing. If she asks you for stuff a lot she might be using you or if she doesn't act like she does to her other friends might mean you are not actually her friend too.
Yes you can look on the history on the top left.
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.
tell that friend to stop using that
It really all depends on "who" exactly your friend is. If it's a friend that your not very close with, don't be surprised. Now, in most cases, people who did not know you very well would not try to go through all the trouble to use you. So it would be a best friend using you. In which case you should confront this "friend" and tell them how you feel and that they are not really your friend. Resist urge to get revenge, if you do you are really no better than they are. But make sure you let them know how you feel.