HOW can one KNOW a VIRGIN by his/her behaviour.

I don't think its possible to find that by his/her behavior

Normally a girl can feel the situation of a boy exactly. But for a boy, it's rather difficult.

You can't tell, so don't worry about it. OK, so once you actually have a virgin in bed with you, their lack of confidence might be a giveaway. But then many 'experienced' people might be just as shy and fumbling due to low self-esteem or bad experiences in the past. Most virgin women don't even have hymens nowadays. If they've ever inserted a tampon or ridden a bicycle or horse chances are it went long ago. It's not important whether somebody is a virgin or not, and it baffles me why some people are so obsessed with it. What they have done or not done physically can't change their personality or who they are inside.

u can by studying the layer present after lips. but this layer may rupture during their daily activities. and one more thing is dat we cant know it by behaviour. untill unless one speaks out

I think that you can tell by seeing how they are around other people. That's the easiest way. If a topic comes up about relations and they look down, or tend to shy away from the conversation then I feel that is what gives you a good inclination whether he or she is one right away. What I don't think you can do is look at their personality in general. If you see a girl or a guy acting wild or even being low key you still don't know if they have had relations with a man or woman. For example good girls that seem to be quite innocent can be quite bad sometimes in the bedroom.

You can only know a *shy* virgin by his behavior. :P

Do not try to figure it out...