Grammar and Spelling: There were a lot of grammar mistakes. Make sure you capitalize the first letter of every sentence. Also, make sure you use punctuation. That's the one of the main keys for having sentences flow together. Here's a what to do and what not to do.

What not to do:
we made out for at least 5 minutes our tongues locked and we both fell to the floor he kissed down my neck and...

What to do:
We made out for at least 5 minutes. Our tongues locked and we both fell to the floor. He kissed down my neck and...

Which example is better? The second one right? It's less confusing. You didn't really have that much spelling mistakes from what I read.

Another thing you need to do is be a bit descriptive. Some people won't give your story a chance if you don't describe things. It's called using imagery, figurative language, and adjectives. You draw the reader in and they'll be able to visualize the scenery in their head.

Plot and Story line: Your plot if very unique. I like how the plane crashed and they landed on an island where it snows all of the time. The only thing I don't like about the plot is that they automatically like each other without getting to know each other. I feel like it's being rushed.

I would give your story a 6/10 for Grammar mistakes.

Notes

If I was a bit offensive, please tell me and I'll take your review down. I'm just being honest and giving you tips on what to do and what not to do. I'm trying to help you improve and that's my main goal of doing reviews. I'm not trying to be mean in anyway.