Credit: Video Still

With all the grief and melancholy on the first two episodes of Grey's Anatomy Season 9, we’re excited to see a lighter mood coming up in Season 9, Episode 3: “Love the One You’re With” (airing October 18).

In the promo for the episode below, Meredith (Ellen Pompeo), Callie (Sara Ramirez), and April (Sarah Drew) all appear happy, while Alex (Justin Chambers) and Jackson (Jesse Williams) have sex on the brain. Jackson will tell Meredith about sleeping with April, prompting her to retort, “You defiled a virgin!” and Alex won’t be able to keep it in his pants around the interns. Callie tells him, “Stop sleeping with your co-workers. It ruins them.”

Also, there will be plenty of MerDer time, including those sexy scenes we’ve been hearing about in spoilers. And that Jackson proposal? We’ll finally get to see it in context.

Check it out below!

Credit: SpoilerTV Photo: Grey’s Anatomy Season 9, Episode 3 Promo: MerDer Gets Sexy (VIDEO)

Catch the next new episode of Grey’s Anatomy on Thursday, October 11 at 10 p.m. ET/PT on ABC.

Molly Friedman is an editor at Wetpaint Entertainment. Follow her on Twitter @MollyFriedman.

Satisfy your Grey’s Anatomy addiction: Like us on Facebook and Follow us on Twitter and Tumblr.