No one was more relieved to see Jackson (Jesse Williams) return to Grey's Anatomy than Maggie (Kelly McCreary). Despite his disappearing act -- honestly, who ducks out and only leaves a voice message? -- she ultimately forgave him and all seemed right with the happy couple. But don't let out that sigh of relief just yet. It looks like there may be more trouble brewing for the lovebirds.

In this exclusive sneak peek of Thursday's episode, titled "Anybody Have a Map?," Maggie makes a startling discovery: a mysterious woman has been texting Jackson with heart Emojis and telling him she misses him. Wait, what?

Discover your new favorite show: Watch This Now!

"I met someone when I was at the monastery," he reveals to Maggie in the video. It appears that when he found peace in nature, he also found comfort in a new friend Kate, who he adamantly denies hooking up with. "No, I didn't sleep with anybody," Jackson insists. "I didn't even kiss her. It's not about that. We talked." Even if they were just talking, this still sounds pretty bad.

As Jackson and Maggie hash out their relationship woes, Thursday's episode will also see Catherine (Debbie Allen) head to Los Angeles to get the new foundation off the ground. Plus, Meredith (Ellen Pompeo) and Koracick (Greg Germann) take on a highly confidential consult and a pregnant nurse collapses while talking to Richard (James Pickens Jr.). Brace yourselves for a doozy of an hour.

Grey's Anatomy airs Thursdays at 8/7c on ABC.

Other Links From TVGuide.com Grey's AnatomyKelly McCrearyJesse Williams