the answers are:
-as we get to know more about people and like them, we start to regard them as better looking. (since we associate them with postivie things regardless of their physical structure)
-we view others as beautiful or ugly not just on the basis of their appearance.(behavors could also play a part even though it may not matter that much on initial interraction)
-posture, gestures, facial expressions, and other behaviors can increase the attractiveness of an otherwise-unremarkable person (for example, smiles and open body language would make people automatically perceive you as someone that is approachable and having social value)