Hello, and thank you for playing! I'm glad to hear you love it! (Q V Q) I've found that you must start a new game for Vitale's route to reveal itself. A notification will appear at the start of the new story if his route is unlocked. If it doesn't occur (and it only mentions one of the other two routes as completed), it hasn't registered one of the other two as completed yet.
To ensure that it reads both as completed, I saved at the choice menus and let each choice run to the end using skip, then saved the game as prompted in a different slot, loaded from the last choice, and repeated. I believe you can re-enter a choice menu by hitting back if you save shortly after. And if the regular skip isn't working, you can access "skip unseen text" in the options menu!
Sorry for the trouble, and I hope this helps! (T v T )