You should tell him it's something you have and have to deal with, and his help won't be required but it would be appreciated. His development is what's important. Also tell him that if it affects him, you'll try to help him
Most tulpas are helpful anyways. He'd probably want to help you. If he can't, then that'd be problematic for him. Of course, he could do what you want as well. Really, it's hard to tell.
Host used to have a lot of that. I'm more resistant to it, hence why I'm the one doing things. Though Mal's gotten better since then. Less to be depressed about.
blood and fire, sorry. i'd figure that's common sense. if someone doesn't feel depressed when not fronting, and neither does the tup, which wasn't stated, then i'd say that's fairly obvious
She doesn't feel depressed when one of us is fronting is because we're doing all of the thinking/feeling instead, while she does nothing. That's how fronting works, heh