How rare is it to be in love?

I fell in love with someone and they fell in love with me. We had an amazing long relationship together, but recently broke up. I never felt this type of pain before.

People always talk about how you can meet other people, but I’ve dated other people and never had this type of emotion before.

I feel like falling in love with someone and sharing that love together over a long period of time is a rare thing. I wonder how long in the future I will be thinking of that relationship.