(Anna P.O.V.) Anna was usually able to sleep perfectly until one night when earlier one day when Anna and Elsa had went swimming together Elsa ended up wearing a bikini that was about two sizes to small for her since she couldn't find her normal bikini that she wore. When they were swimming and playing around one of Elsa's breasts fell out of her bikini and immediately when that happened Anna noticed actually how much she loved her. When Elsa's breast fell out and was fully exposed to the world Anna realized just how sexy Elsa was, with her slim figure, her bleach blonde hair, those icy blue eyes, and just her overall figure. It was also that moment when Anna decided to be a lesbian and that she wanted Elsa more than anything being the only thing she could think about.
(Elsa P.O.V.) All Elsa had been able to think about was what she had done earlier that day when she and Anna were swimming secretly she had known where her normal bikini was one of her breasts falling out of the bikini was actually part of her plan, a risky plan to try to get Anna to see one of her breasts. Elsa had always loved Anna as more than a sister. Her whole life she had always wanted her and Anna to be more than sisters she had wanted them to be a couple. After a night of tossing and turning in bed she had finally decided that she would tell Anna how she felt the next morning.
The next morning when Elsa and Anna were both up they were settled in their personal room which Elsa had established a few months before in the room noone was allowed to disturb Anna and Elsa unless given permission or if it's a serious emergency. With soundproof walls Anna and Elsa could do whatever they wanted while in the room. Elsa then broke the silence between the two of them and said "Anna, I have a confession to make..." Anna said "So do I, but I'll let you go first." Elsa said "Anna I love you, I always have I love you more than a sister I- I love you like someone I want to be with for the rest of my life."
Anna was silent for a second before she said "Elsa, I feel the same way I have for a couple months now." (That was intentional is supposed to be a lie about Anna licking Elsa for longer than than what she actually has) Elsa said "So, what do we do now? Should we try this for a while to see if it works out?" Anna approached Elsa, kissed her and said "Elsa, we already know it will work out when was the last time we fought?" Elsa thought about it and couldn't remember when the last time they fight was. When they had everything figured out they knew that were going to be together for a long time.