One

The last time that Isaac saw Elena she was fifteen years old and he was eighteen. Being best friends with her older brother Derek, they both enrolled in the Marine's. Eight years later and he's returning from his second tour of Iraq with some bad news, Derek didn't make it back and now he's back to stay but what he didn't expect when he came back was to see a grown up Elena who is completely different from the young girl that he once knew. Will the two of them be able to keep their affections for one another a secret or will they fall into one another's arms? He knew that he would promise his dying best friend that he would take care of his sister but would be betraying his promise when he falls madly in love with her.