Demi Lovato and boyfriend Wilmer Valderrama looked very much in love as they spent a PDA-filled vacation in St. Barts on Wednesday.

Lovato, 23, and Valderrama, 35, were photographed hugging and kissing while taking a dip in the sea, clearly proud to show some affection despite the presence of paparazzi. In another photo, Valderrama is shown lifting the singer like Patrick Swayze and Jennifer Gray’s iconic lift scene in Dirty Dancing.

Demi Lovato and Wilmer Valderrama attempt iconic Dirty Dancing lift during romantic swim https://t.co/yi3NLcjs7w pic.twitter.com/ZTlOM0ik79

— Sugarscape (@sugarscape) December 17, 2015

“Wilmer and Demi could not keep their hands off each other,” an onlooker tells ET. “They looked really happy and super affectionate.” Lovato showed off her fit physique in her plunging black one-piece swimsuit, which she playfully peeled off when she decided to skinny dip in the water. The “Confident” singer held up her swimsuit for Valderrama to see.

According to ET, Lovato was on St. Barts on Wednesday with several Victoria’s Secrets supermodels for the Victoria’s Secret Swim Special, scheduled to air in 2016. Her fellow artists and friends Nick and Joe Jonas will also be featured in the VS special. The singer posted photos of herself and the two Jonas brothers posing with the Victoria’s Secret models on Instagram with the caption “#somethingbigiscoming16 #CONFIDENT.”

#somethingbigiscoming16 #CONFIDENT ??? A photo posted by Demi Lovato (@ddlovato) on Dec 16, 2015 at 5:59am PST

Lovato also made fun of Nick for being the third wheel in some of the snaps. “I love these pics so much… Sorry @nickjonas for third wheeling you but your bromance third wheels me too!!!” she wrote.

“#somethingbigiscoming16 #CONFIDENT #myboys #baes,” she added.

Valderrama and Lovato have been together for five years now. In an interview given during the Billboard’s 10^th Annual Women in Music event, the singer revealed she has no idea when Valderrama will propose.

Demi Lovato Talks About A Possible Engagement To Wilmer Valderrama Next Year

“You gotta ask him!” Lovato said when asked if they are currently planning the next step in their relationship. “I have no idea.”