Perhaps a little heartbreak might be losing a softball game or the competition for cheerleader or a friend not inviting you to his birthday party.
I recall disappointments where I was simply heartsick about an outcome and that didn't "feel good" ya'll.
Have you had the good fortune to have a special trip or vacation as an option then at the last hour it all fell through. No matter how grown up you are it's a heartsick time you have to work through. At first you privately react exactly as the 5 year old when told he can't have the scheduled birthday party. Inside where no one can see, you kick, scream, throw yourself on the floor and cry buffalo tears [whatever that is]. You feel your little world crumbling apart like Graham Crackers that have been in the pantry too long.
You are an adult so you can't really do that..but it is real and it is your heartsick moment, your private heartbreak. Sometimes that is when you really throw a party: A BIG PITY PARTY and just to 'show them" you don't invite anyone to your party. They are just supposed to care enough-to read your inner thoughts and know you're not available-until the party's over.
Sometimes it's hard being grown up isn't it? Come on, Admit it-I'm right there with you..no matter how mature and reasonable I may appear on the outside.
Hey.. That's why God made Tears..use them. I do!