You REMAIN in love with four people in your life.
The first is your soulmate of a best friend. The person who grew with you through thick and thin. The person who knows your best days, your worst days, and all the days in between. This person remembers what Uncle Ed said to you at Christmas ten years ago and knows what makes your parents the most angry. This person slowly becomes part of you.
The second is your bad influence friend. The person who you say your meanest things to and they dish them right back. At the end of the day, their sassiness is actually a good influence on you, and your kindness a good influence on them... but you're both really in this relationship because you balance each other out and have a blast doing it.
The third is your parents. Ok this math here is a little sloppy. But your mom and dad, or your work moms, your super close aunts, your role model godparents... whoever molded you into who you are... these people are part of your love story. They have given you the best parts of themselves... how could you not love them forever for that?
Finally, the person you choose to spend your entire life with. The person who showed you why it never worked out with anyone else before. You'll love this person for forever because they love YOU for forever. This person takes all the people on the above list and loves them because they are part of you.
Sure, romantically you may fall in love with only three people. But in my experience, You stay in love with so many more.