There are no such things in this world.
All the relationships are conditional.All types of love are confidential.Lets example:
you are never going to love other teachers You love your favourite one.Suppose you are in 10th class.
but you have few friends. why?
Just because they are fulfilling your conditioning.
You are never going to love someone without any condition.Your parents love you.but they are never going to do such love to any random one .Again conditional.You love your beloved just because of relationship.God will throw you in hell.if you are not following the law of god.
Anyone falls in love with someone who stole his heart.He falls in love with a girl who attracts him by something special like facing expression or beautiful eyes or beautiful heart.