Things I wish someone had told me were actually normal about discovering your plurality and not something that proves you’re faking:
Very quickly suddenly being able to recognize system members and who’s fronting when you never did before. Of course you never did before. You wouldn’t have been able to say “oh, now my headmate X is fronting” if you didn’t know that was even something that happened to you. Knowing you are plural is like a light switch on to being able to notice when you’ve switched.
Alternatively frequent co-consciousness or noticing when you’re blurry/don’t know who you are versus being a specific member. Some headmates may be more defined in individuality than others and some may be “softer at the edges” and that’s okay. Also, if you are a system that’s frequently blurry or co-con, knowing you’re a system is what makes you able to call it those words, but it was probably happening a lot before then—you probably just thought of it as “I’m in such a weird mood and I don’t even know what I want to do/how I feel” or “I have a really active internal monologue”
System members starting to name & define themselves one after the other in quick succession. See above: you didn’t know they existed. They probably didn’t know they existed, they just thought they were you, or you were them. Now you all know that you’re different, you start to differentiate yourselves, and compartmentalize each other. Worrying this especially makes you fake is like worrying you’re faking being trans because you didn’t change your name until you knew it was an option.
Rapid switching. It may have even happened before, but you wouldn’t have noticed if you didn’t have the language to even internally explain why some of the things you’re saying/doing in the moment feel “out of character” and some feel like you.
Gaining a higher understanding of past trauma if your system is trauma-related in any way. Or gaining a higher understanding of how your dissociation works if your system is dissociative. Being able to look at a specific system member who acts a certain way and consider their behavior in a vacuum is a lot more effective at creating understanding than trying to wade through your own behavior as it’s happening. You’re also doing a lot of self-analysis right now in general. Example: having one member who fronts during chronic illness flare-ups and dehumanizes themself for other people’s sake, gets you thinking about what in your past would cause them to do that. Being that member in the moment and not knowing about the system is like standing too close to the mirror to see anything except your own nose.
Having multiple different types of alter/headmate. It’s normal for some to be more distinct than others, to front more easily, dissociatively or more disruptively, to have possessive or nonpossessive fronting, or to identify more or less closely with any kind of collective or core identity.