Why do Jan and Bob become so important to Chris/Alex?

Jan becomes emotionally attracted to Chris, while Alex loves Jan. Chris and Bob are in a secret relationship (don't judge) that they want no one to realize. After Jan confesses to Chris and is rejected, Jan spends the next 2 years of her life investigating Chris, eventually coming to the conclusion that Bob is Chris' sweetheart (again, don't judge). Jan invites Bob on a vacation to Greece, planning to murder Bob to possibly become Chris'. However, on the flight to Greece, the airplane crashes into the Ocean, more than 50 miles from any major piece of land. Backtracking slightly, as we have yet to mention Alex's role. Alex discovers of Jan and Bob's vacation, and misunderstands, believing THEY are the ones who love each other. Alex secretly boards the same flight as the two, and midair, kills the pilot and purposely crashes the plane into the ocean. There were no survivors on the trip, much to Chris' distraught upon his discovery.

What am I doing with my life...

  plan: i will begin with a quotation about the importance of unity in a community. then, i will state my claim that an activity will unite our school by creating a shared vision, purpose, and direction. in the body, i will use three main points that describe the different avenues the students can take: through a variety of clubs, through a special event, or through an awareness week. i will provide evidence about other towns that have unity activities and the kinds of events that they include. pictures will illustrate my three main points in action. for the ending, i will restate the main idea in a new way and pose a question to keep the audience thinking.