what sign do you give when you are intersted in someone?

I smile and if he is standing infront of me i pretend as if i am not interested in him.

A smile has always worked well for me.

I think ones face expression and eyes can tell that one is intersted. Personally i need to say this only to my husband and my body language is what i use.

give her blink maybe...lol

always smile for best result..

I'm a terrible flirt, so I do tend to give the game away completely when I'm interested in someone (if I think there's a chance they could feel the same way). Generally, I'll make eye contact and smile, look up at them a lot, pay attention to what they're talking about, touch them on the arm... and so on. I guess that's what most people do?

no signs please cause its better to say it directly on face about your feelings

I'll try to get more information about him from another people. Because I want to closed with him. So i must have many topic. I don't want he know about my feel first. Maybe I'll do some flirting like see his eyes.