Ideas for my Teaser Trailer

So far I have decided on three ideas for my teaser trailer which I think  they could all work well. Below I have listed the three ideas I have so far come up with and I will then think about the ease, the pros and cons of producing the ideas for my teaser trailer. I want my idea to be strong and outline within them the conventions of my chosen genre of romantic. A teaser trailer usually lasts around a minute to a minute and a half and this is a factor that I will need to consider and look into when choosing my final idea.

Idea 1: A women has kept her diary for 5 years now, writing in it everyday. She gets the choice to go back to any single day from her diary to relive and to possibly change anything that could benefit her life now. She has the day to decide which day she wants to relive. She chooses the day when she was out visiting her favourite place in the country, a day when she got all her thoughts together, alone and started her diary. She realises that this day was the day she left her one and only true love and realises that when she gets back to reality she needs to find him again to resolve the problems they had both left behind.

Idea 2: A couple has been together for 3 and a half years and things were going well, until the boyfriend chose to go away to University whilst the girl is left behind at home. She decides that everyday whilst he is gone, she is going to start a diary/ write letters of her days; what she's done, her thoughts and her feelings. The first couple of months go well until she hears and sees rumors that her boyfriend has cheated. The girl decides to end their relationship but she continues to write in her diary. After a further 3 months of the boyfriend being away, he comes home to sort out their troubles, and the girl gives the guy her diary to read. He realises what he had done to her and how much he had hurt her and attempts to put things right again; taking things slowly for the next few weeks, gaining their trust for each other again and living every minute of every day together.

Idea 3: A group of friends go away together on holiday, celebrating the end of school and exams. There are obvious connections between certain members of the groups. Whilst they're away they all seem to separate into couples. The trailer would focus on one of the main couples, who have once before been in a relationship last year, although it hadn't lasted. They spend the whole of the trip together, on the beach, looking around the city/ town, going on walks and out for dinner together. They enjoy their time together while they can as they realise that things will be different and harder when they get back home. They get home and it is apparent straight away that their relationship will be hard due to both parents being unhappy. They resolve this problem by deciding together that they will meet in secret without anyway finding out.