Okay as expected Alexander wants nothing more than to add all the Weasleys to his mantles as trophies so yeah... He's not a fan. Ginny on the other hands loves her brother! She probably sneaks him a lot of stuff and is always checking on him (b/c she's more like their mum than she wants to ever admit). Fleur is friendly towards him too b/c he's Bill's brother and he did stay with them for a time.