You're the other woman. Dina was one of your dearest friends, and also the person you fell in love with. Her name was Ellie. Dina was dating her, couldn't she see how you could give her much better?

You were at tipsy bar, and the winter dance was going on. Dina and Ellie were dancing and laughing, and kissing.

Inwardly, you were already heartbroken. But seeing how much Dina loved Ellie made you boil in jealousy. That jealousy was probably just your mind telling you that you should give up.