What did robin mean I let wewe in my mind now let me in yours. (Birthmark)

In the episode haunted, Robin was fighting Slade in his mind. None of the other Titans really understood what was happening, so Raven used her powers to enter his mind and find out why he was uigizaji so strangely.

In haunted Raven enters Robin's mind and she can see what he sees, feels what he feels and knows what he's thinking. He lets Raven in his mind. Now, Robin wants to get into Raven's to try and save her but Raven knows it's to dangerous so she says, "Robin, wewe know me better than anyone, wewe should know there are places in my mind wewe shouldn't go, where no one should ever go." kwa this I'm pretty sure she means she shouldn't even go those places in her mind herself.