There are things in life you can change—your weight, your appearance, your mindset, etc.—but there is one thing you cannot change and that is other people. Try as we might, we cannot get people to love us. Even when we are the coolest best version of ourselves someone is going to say, "Not for me." But if we feel good about ourselves we can shrug it off and say, "It's just a date," and know that there will be others.
When I look at my friend's marriages, with their routine day-to-dayness, they actually seem far more romantic than any dating relationship might be. Dating seems romantic, but for the most part it's an extended audition. Marriage seems boring, but for the most part it's a state of comfort and acceptance. Dating is about grand romantic gestures that mean little over the long-term. Marriage is about small acts of kindness that bond you over a lifetime. It's quietly romantic. He makes her tea. She goes to the doctor appointment with him. They listen to each other's daily trivia. They put up with each other's quirks. They're there for each other.