Ramona is very surprised by Jake's unwillingness to engage with this question. Most human clients in this much pain are bubbling over with the desire to explain their pain to someone who's sincerely interested, and really wants to know.
And also - it feels unlikely this couple is going to end up happily non-monogamous - Zephyria seems pretty adamant that it's not going to work for her. But if they were going to end up with that solution, the path would almost certainly flow through Zephyria understanding Jake. If Zephyria gets what's at stake for him, she'll be far more motivated to work with him on solutions that are hard for her to swallow.
So Jake's kind of shooting himself in the foot here, Ramona thinks.
All that being said, he clearly doesn't want to talk about this. So maybe there's something stopping him. Maybe his pain is so intense, and his distress tolerance so limited, that he actually can't really open up the box and show everyone what's inside. He's given as clear a "no" to talking about it as he can.
Clearly Ramona is going to have to find another way.