Ummm....

Her: Err... Will you... marry me??
Him: What?? Are you in you sane mind??
Her: I guess yes. That is why I asked you. I don't remember since when but I have wished to share my life with you. I have wanted to be with you. And the only possibility I see is that we get married. So will you please consider??
Him: But you know I'm in love with this girl. I have been telling you how I feel for her since the day I met her. How could you think about you and me??
Her; 'Coz I am in love with you. Don't you understand??
Him: In spite of knowing all about her and me?? How can you be so... Don’t you think what you are doing is ...??
Her: I understand... but I couldn't hold it to myself any longer so...
Him: I'm sorry but... please forgive me and you'd better forget me.
He: Forget you... I guess I might be dead in the attempt. Thanks. Bye.
Him: But...
Her: Say no more, please. Don't worry, I won't bother you. Ever. I cannot make you love me. And so can you not stop me from loving you.
Him: But don't you think it's wrong on your part to...??
Her: Is it??
Is it?? Just as you cannot stop yourself from falling in love with someone, you cannot stop someone from falling in love with you.