As we near the explosive The 100 season 2 finale, Clarke and Lexa’s tentative friendship hits a snag as they clash over leadership styles.

Since Finn’s tragic death, we’ve all been friendshipping (and/or actually shipping) Lexa and Clarke, whose alliance literally holds the Grounders and the Sky People together.

Related: The 100 introduces its first queer character: Why Lexa’s sexuality matters

But in tomorrow night’s The 100 season 2, episode 12, “Rubicon,” Clarke takes issue with Lexa’s decision to leave some of their people to die, to avoid the Mountain Men discovering that they’re listening in on their communications.

It’s all very The Imitation Game, isn’t it?

Check out the promotional stills from the episode, which reveal Clarke and Lexa’s confrontation, and show a stressed-out Jasper:

The official synopsis for the episode reveals that Lexa might not be the only one losing her friendship bracelet this week:

“CHOOSE YOUR PATH WISELY — Tensions between Clarke (Eliza Taylor) and Abby (Paige Turco) come to a head after Clarke crosses the line. Raven (Lindsey Morgan) helps Bellamy (Bob Morley) navigate Mount Weather. Jaha (Isaiah Washington) and Murphy (guest star Richard Harmon) encounter a stranger who may not be what she seems. Octavia (Marie Avgeropoulos) is prepared to fight for someone she loves. Meanwhile, things reach a breaking point at Mount Weather.”

Related: Could The 100’s Octavia Blake be the Grounders’ next Commander?

The first sneak peek for the episode (first revealed on last week’s CW Fan Talk, featuring yours truly) shows Jasper and the other delinquents being held captive inside Mount Weather:

But hey, bright side: at least Harper isn’t being tortured… for now.

‘The 100’ season 2, episode 12 airs tomorrow night at 9/8c on The CW