Only the Young-It's complicated (a Charisa, Barlie, Metsy and Marisa Fanfiction)

Help

Hi everyone! I just wanna say I have all the ideas for the book all the way up to the end.... but I have a problem. I have no idea how to build up to all the problems and complications in the book!!!!! I know whats gonna happen next I just dont know how to build up to it if you know what I mean! So please please please help!!! Give me an idea for what Betsy and James (her boyfriend) could do in the next chapter. Thx! Peace!