Hey, I’m not 100% sure, but I think there aren’t really any totally free and easy ways to see who someone is texting unless you actually have access to their phone. I’ve heard of people checking the call/text logs if they have the phone in hand, but that doesn’t always show everything and usually not the content of messages. I read somewhere that carriers might have records of numbers that were texted, but not the actual conversations, and they probably won’t just give that out. Maybe someone else here has found an app or way that works? Could you say if you have access to the phone at all, or just looking for things you can do remotely?