I know it's hard to accept someone out of their normal place Malte but it also isn't that simple to stay so in-character throughout the whole story either.

There are bound to time where you just want to let loose and goof around---it's still a role play, and it is still creating a story.
I guess if I'm going to be critical here I'm going to say this: the reason I believe no LBT role play has ever really worked online, is because they were too serious. It really did not give the author the freedom to create another section of a story with a character if that character is only expected to do certain things. Role play is about the freedom of the person playing a character through a situation, and that's hard to do if we're trying to keep in the boundaries of a LBT story.