‘Grey’s Anatomy’ Sneak Peek Shows Maggie’s Reaction to Meredith and Nathan — Watch Here!

Poor Maggie!

A secret's never a secret for long in the world of Grey's Anatomy, and judging from this new sneak peak Meredith (played by Ellen Pompeo is about to learn that lesson. Tomorrow night's episode — "Don't Stop Me Now" — picks up the storyline following the almost deadly plane crash. In the last episode, we watched Meredith and Nathan (played by Justin Henderson) finally open up and accept their feelings for each other.

MORE: 'Grey's Anatomy' Creator Shonda Rhimes Majorly Regrets Killing One Character off the Show — Find out Who!

Meredith and Nathan might have saved the lives of the passengers aboard the aircraft, but did they cause their personal lives to go up in flames?

The sneak peak shows a visibly upset Maggie (played by Kelly McCreary) confront Meredith about her budding romance with Nathan. She peppers her with questions including, "Did you join the Mile High Club?" Alex Karev (played by Justin Chambers) is sitting alongside the half-sisters, and even tries to leave because of the palpable tension!

MORE: Kelly McCreary on the Upcoming 'Grey's Anatomy' Season 13 Finale: "Everyone Is In Danger"

Meredith then tells her that they can discuss the situation elsewhere, but Maggie instead decides to leave. It's clear that Maggie feels betrayed that Mer hid her relationship with Nathan despite knowing that Maggie had feelings for him. We wonder if the women will be able to move past this!

You won't want to miss the new episode — Grey's Anatomy airs Thursdays at 8 p.m. on ABC.

Click through the gallery below to see the cast of Grey’s Anatomy then and now!