It wasn't really a conscious effort to separate Samantha and Christopher like that, it just kind of happened that way. But I see their relationship more as just close friends right now than seriously romantic. Christopher's 15 and Samantha's age is ambiguous, though she resembles a 15-16-year-old girl.

And, lol, no Wildclaw and Lizaki's proximity doesn't mean they're involved, either, although that might be funny.