This game just can't resist the urge to delay resolution and stretch out intrigue, which is fine on its own.
Except, it goes so far as to make your LI a closed-off, secretive, stubborn person whenever it's their storyline. It comes at the cost of feeling like your relationship with the LI is shallower than you thought. As though after everything you've been through they still can't trust or confide in you. Your advice and care is worthless to them as soon as they get a bit emotional.
Why do they save their huge reveals for conversations with third parties when they could have given you a head's up beforehand. They drop a huge nugget in the middle of a conversation with someone that's a stranger to you and then act annoyed when you want to question it or get them to elaborate. I guess we should just shut up and be their mule to taxi them back to their world.
If it was just 1 or 2 characters, that could be dismissed as their personality but when it happens so often it starts feeling like they don't have a personality beyond how they must act to keep the intrigue going.