ask him this, and if he IS using you, his response will be irritated and bored, if he is genuine, he'll be upset you even thought this, and will look you in the eye
What does your gut tell you?
tell that friend to stop using that
You can tell how big a star is using light and you can tell what elements it is made from using light.
I can tell when you're lying.Please tell your friend not to do that.
tell him your pregnant see how fast he leaves
Simply inspect it and it will tell you.
if it feels like they are using you, they are...trust your gut!
yes you can.
Using an indicator.
your stuffed
The easiest way to tell (there are many) is to go to What Browser website (link is under this answer), it tells you which browser you are using.
you can tell when a person is using you when they act all, "can you do this, can you do that" and when they never say thanks.