Who told kody about janelles move?

Ever popular time to wildly speculate 😉 In the last episode i don’t think kody said which kid spilled the beans about it. Any chance the kids of the OG3 (is that what we’re calling them?) told one of robyns older kids and they told kody? I didn’t think he had any relationship with the non-robyn kids so that was one idea. Another was he might still be speaking with Truely and she might have said it.