please tell me one of the best way to propose my life partner

Well to my way of thinking it is not so much how you say "Will you marry me" it is where. If money were not a problem I would invite them to go on a romantic crusie. After a few days of enjoying wherever you would like to go, and when you see your partner is very happy, that is the moment to ask the question......I love you very much..Will you Marry me and make the rest of my life as happy as you are right now? Regardless of what you do or where you go just make sure that he knows how much you love him. You can't miss. My very best to you....