You can't. Just know that you do and be yourself. Also, see related question below.
i will tell them that i really love him and try and convince them in a polite manner to accept him.
If you have to convince them, they probably won't. However, they do not have to. He's your boyfriend, not theirs. What matters is your happiness. You can't base your life, love, & happiness off what they want & think. You'll never be happy that way.
The best way to talk to your parents is honestly and openly. If you tell them your in love and be honest they will likely respect you choice.
Sometimes parents dont see beyond the society. Society is made by us for us, we are not made for society. If you want to convince your parents for your love marriage, first you need to believe in what you wanna get into. Once you are sure. go ahead and make your parents see and believe where you wanna be. Obviously they will refrain, but you need to keep trying. Never give up to their pressure, you will only regret all your life.
Get an iTouch, or convince your parents to let you have a phone.
Many parents do not accept their LGBT children. Those who are capable of love and acceptance have no problem accepting their children.
then marry where ur parents say
You can't. Your have to accept that you most likely can't change your parents opinion. If they trust you, you will be fine.
tell them they will love them even if they tell them they can't have something
Show them that you really love each other
To convince your parents, try to have an open and honest conversation with them. Explain your feelings for the boy and emphasize the qualities you admire in him. Assure them that you are committed to the relationship and seek their understanding and support in this decision. It may also help to involve a trusted family member or mediator to facilitate the conversation.
Only bad parents do that. Good parents love and accept their LGBT children. If your parents don't accept you, they are failing as parents, and it has nothing to do with you.