There is NO such thing as True Love. Its only “Infatuation”. Its your mind playing tricks on you. Listen to the advise above and forget that guy. By forgetting him, he is not gonna be dead or be misreable. I am going to tell you something right now. You should write it on a piece of paper.    Even if all the people on this forum tell you otherwise, you are still going to chase that guy against your parents will. No matter what anyone says Now, do you want to read something that you really like? In Muslim religion marriage between siblings are allowed, such as cousins etc.

This might be from Hinduism, but more or less the concept is same in Sikhism too - as I have read in various kathas  

Can Sikhs jap “Raam” naam?

Why AjeetSingh? 

Some people think you have a dream home that represents your space in the dream world where a lot of dreams occur, especially those with other consciousnesses.  Like in the matrix when neo fights the train man. The train man has him come to the subway which is his domain in the matrix. Where he has greater ownership.  We can discount the night dream as not real. And that's true. That's ultimately true of this too though.