Daily Flash Fiction Challenge entry. 299 words.
As a kid, she loved the water, earning ribbons at swim team competitions. That's where she met her best friend Esther. The two of them were the strongest swimmers on the team. All these years later they were still best friends. Now that she had her diploma, Esther was going to get her a job at her family's car lot. She could get a real paycheck and quit wasting her summers babysitting on the beach.
Feeling very adult, she checked the mailbox as she passed by. Inside, she found a plain white envelope with just one word on it: Sandra. How fun! It was like an out of season valentine. She knew who it was from as soon as she saw the handwriting. Suddenly feeling more like a giddy schoolgirl and less like an adult, she skipped into the house, flopped on her bed, and ripped it open.
"Please understand. Esther and I are in love. We both care about you and never wanted to hurt you. We are on our way to Las Vegas to get married. I'll always remember you."
Tears fell as she left the letter on the bed and made her way back to the beach. She was going to need that swimsuit again after all.