I think Romeo is correct. In Scene 2, Act 6, lines 6-7, he says "Do thou but close out hands with holy words, then love devouring death do what he dare". In this quote, he is foreshadowing their death but also sayig that by getting married they may have to pay the intimate sacrifice, death. I believe that no matter when you think you will die, you should live life to the fullest. If their marriage makes both of them happy, then it is worth it. However, being happy doesn't necessarily involve marriage or marriage to only one person in the world, so I don't think that he is fully accurate. Death is final, and once killed you are dead for good and there is no going back. Being happy while you are alive is one of the most important things you can do, but in this case, this specific form of happiness isn't worth death (in my opinion).