how to say i love you to a gal you really die for?? please suggest

believe it or not. I said to my girl Directly. "hey, look iam in love with you. I believe you. I dont know you believe me or not. If you believe me Please Love me or Hang me." Her reply was Pls give some time. She Agreed with me after 4 days. I dont believe in talking too deep & making more heroics. we should be straight & truthful In love. I dont know This will help you or not. In this world I believe Only 2 words YES & NO. yes = yes i can do, it can be done, i can happen. NO = No I cant be done, I cant do that, It cant happen. If we get the any one of this in the begginning why should we waste our precious life & time behind some thing or someone.