My father and mother had a love marriage, but now they are against me chasing a boy I like. How do I tell them that it is not fair?

if they had a love marriage but are now against you having one, i am sure something is bothering them. please talk to them and ask them why they are opposed to this boy. or is it that they are opposed to you having a love marriage? if it is the former and they have a problem with only him, ask them their reasons. maybe you will get a new perspective on him and the relationship. if they are against love marriage for you in general, you already have your answer ready :)