looks do matter to meet up with your expectation of an ideal partner which has developed over the years beacuse of what u consider as atrractive in looks and behaviour. it can only probably reveal that the person has attractive features running in their family genes and probably good health.but this i consider is only the first step to gauge if the person is right. this is the easiest part . the important and more dfficult part is to understand the real person as this is what will determine a long term relationship. you sure will not think about a persons beauty when he is insulting you or bashing your head against the wall.
take time to understand and evaluate the loved one before u decide to give away your heart and more.