Gulrukh : It is an obligation, according to Islamic Law, for the woman not to uncover her face except to those who are Mahrams for her (some scholars do say face and hands are allowed, but not more), Similarly, it is an obligation upon a woman not to mix with men who are unrelated to her when she is unveiled (all scholars agree on this) and it is also incumbent upon her not to be secluded in any place with a man to whom she is unrelated (again, all scholars agree) - that is, one who is not a Mahram for her. it causes an infinite amount of corruption.

In the light of the above, I think the answer to your question "WHAT ADV IS BAD THAT IS SHOWN ON TV" has been answered. And also, Your question "Whats wrong if boys and girls talk blah blah" has been answered. If you don't agree to it, you reserve the right to do so however you should also admit clearly that you don't accept Islamic law then