In one of the sweet snaps, a bikini-clad Burke poses next to the Melissa & Joey star in front of the crystal clear water at the Sandals LaSource Grenada hotel. The lovebirds took the cuteness factor to a whole new level by sporting matching Adidas baseball caps.
"Sunday Funday," the Dance Moms star captioned it.
Burke also shared a series of pics, featuring her and Lawrence splashing around in waterfalls, tubing, hiking and having the "adventure of a lifetime."
"Life's a beach," added Lawrence, who posted a selfie of the two to his own account.
Lawrence, 37, first met Burke, 33, in 2006 when his brother, Joey Lawrence, was a contestant on Dancing With the Stars. They dated for about a year before calling it quits in 2008. They reignited their romance back in February, teasing fans with adorable Snapchats of the two hanging out in Big Sur, California.