get all the user id's 
for each user id get the relationship question 
for each user id get the match_sex question

you will need to merge the two objects as array if you want them to be together otherwise you will need to access them seperately. 

I put the output and exit after the first user so you can see the formats of the objects without having to do the whole user base. 

//testing begin

$userlist = BOL_UserDao::getInstance()->findAll();

foreach($userlist as $user)
{

  $uid = (int) $user->id;
   
  $example = new OW_Example();
  $example->setOrder('userId ASC');
  $example->andFieldEqual('questionName', "relationship");
  $example->andFieldEqual('userId', $uid);
  $relationship[] = BOL_QuestionDataDao::getInstance()->findListByExample($example);   

  $example = new OW_Example();
  $example->setOrder('userId ASC');
  $example->andFieldEqual('questionName', "match_sex");
  $example->andFieldEqual('userId', $uid);
  $matchsex[] = BOL_QuestionDataDao::getInstance()->findListByExample($example);   



//output for test 1st user only
echo "<pre>";
print_r($relationship);
echo "<br />";
print_r($matchsex);
exit;

}//close foreach

//testing end