Alters have their own attractions and I've even let one date someone. It's like any other relationship except you have to deal with other people sometimes.
Say, like for Tib, if someone dated Tib, they'd be dating Tib, not me or anyone else in our system.
Well... because thats what it is, really. Trauma caused mental illness.
And its not always productive because one alter may have a set back or refuse to work. Etc.