Last night, we saw new mom Ellen Pompeo back at Grey’s Anatomy. The show is moving Derek and Meredith back where they belong: front and center. That’s the good news.

Here comes the bad, according to EW: “They will face relationship challenges, many of them work-oriented, in the second half of the season,” reveals creator Shonda Rhimes.

Rhimes insists, though, that this latest obstacle will not result in the newly married-via-Post-It pair breaking up - a rumor that has been making the rounds on the Internet.

Derek and Meredith aren't breaking up ... but there'll be bumps along the way.

“I don’t know how many times [I] can say, ‘Derek and Meredith are together forever’ and have anybody hear it,” the  executive producer says. “I can only reassure so much."

“In order to [produce] a drama you need to have some drama,” Rhimes adds.

“Whether or not two people are meant for one another and will remain together doesn’t mean that things aren’t going to happen to challenge their relationship.”

What do you think? Are you okay with watching the MerDer relationship evolve even if it means some difficult times? And what do you think these new obstacles will be?

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.