Thank you for your question! As far as we know, we can't find two identical leaves in this world, let alone two different perspectives in persons. However, I don't believe that two persons who can't eat together will get a hard life after the marriage. There is no direct link between these two factors!
Let's give you an example, my wife and I have slightly different of eating habits. She doesn't like vinegar, garlic, onion and ginger. I love onion and vinegar very much! In order to solve this problem, we cook one dish with onion and vinegar, the other one does not included all of above! We still respect our different eating habits from each other and explore new different delicacies at home. As a result, we feel the infinite joy in this exploring process and make our home full of warm taste!