"[There's] going to be a lot of down on this roller coaster before it comes up," Williams tells PEOPLE

By Mariah Haas
Updated October 15, 2015 01:35 PM
Credit: Dimitrios Kambouris/Getty

Will love conquer all for Jackson and April on Grey’s Anatomy? After last week, fans aren’t so sure.

It’s clear that plastic surgeon Dr. Jackson Avery (Jesse Williams) and his wife, trauma surgeon Dr. April Kepner (Sarah Drew), have hit a very rough patch, leading up to Jackson dropping the ‘D’ word – divorce – and taking up residence on the couch of Dr. Bailey (Chandra Wilson) and Dr. Warren (Jason George) since Kepner refused to move out of their shared home.

But Williams doesn’t want Grey’s lovers to give up just yet!

“There’s definitely hope,” the actor, who teamed up with Clearasil’s Teacher Truths campaign, tells PEOPLE. “It gets really grim. It’s still very grim. We’re well ahead, and I don’t know where it’s going.”

As Grey’s diehards know, after losing their son Samuel Norbert last season, Kepner decided to serve in the army, leaving Jackson twice to grieve alone despite him telling her that if she left again, he didn’t think he’d be there when she returned. Now, Kepner is back and wants the couple to fight for their marriage, but Jackson told her early on in season 12: “I’m not sure we are worth fighting for.”

“[There’s] going to be a lot of down on this roller coaster before it comes up, but there are flickers of hope,” says Williams, 34. “You know what fans can realize is that this frustration and this anger for both of them comes from love.”

He continues, “They love each other, and it comes from being hurt. And if they didn’t care, they wouldn’t invest this time into it. They just wouldn’t talk. So I think that’s what gives them hope.”

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Grey’s Anatomy

airs Thursdays (8 p.m. ET) on ABC.