What a nice story!
I never really read something about Switzerland and Germany (which is probably not because I don't like it, but more because there is nothing to read about them out on the internet x'D) and I must say you've done a really great job!
I love how in character you stayed with both of them and how they are hesitant to show each other their feelings. I can picture the relationship between them to be just like that.
And Switzerland being jealous of Italy is just too cute xD
Great job! :D