It’s been weeks since news of Tristan Thompson cheating on Khloé Kardashian made headlines, but we’re still fuming for her — and apparently, so is her big sister. This week, Kim Kardashian unfollowed Tristan Thompson on social media, and you know that means there’s no coming back from this for him…at least, not where Kim’s concerned.

It’s hard to pinpoint exactly when she decided to unfollow him, but as Cosmopolitan pointed out, she’s no longer among his followers on Twitter or Instagram. If you want to see the proof for yourself, just go to Kim’s Instagram and search her followers; Tristan’s name (@realtristan13) doesn’t come up. And as for Tristan? Well, he’s still following literally all of Kim’s sisters but her, including Khloé, Kylie, Kendall, and Kourtney. In fact, he’s even still following Kris Jenner.

Since we aren’t BFFs with Kim, we can’t say for certain what’s going on behind the scenes, but it’s probably safe to say she’s not pleased with the way he’s treated her sister.

In fact, when she was on the Ellen show this week, Kim called the situation “f*cked up,” and it’s hard not to agree with her. Cheating on someone while they’re pregnant with your child? It’s hard to get any lower than that. And we had a feeling that she was going to be opinionated on this subject from the get-go, especially since she shared this photo on Insta:

There was never any question whose side Kim was going to be on — with a bond like theirs, of course she was ready to be there for Khloé.

Other than the Ellen interview, Kim hasn’t spoken out much about Khloé’s relationship with Tristan, and neither has Khloé herself, so it’s impossible to know what’s going to happen next. Is she going to stay with Tristan and try to raise their daughter, True, together? Is she already planning an exit from Cleveland?

Hopefully, she’ll fill us in (or at least drop a social media hint or two) soon. But one thing’s for sure: No matter what happens next, she can count on Kim to have her back.