It was revealed last week that they'd been on a couple of dates, and this week he took her to Cannes, where they were photographed cuddling in swimwear.
The actress was seen lying in her bed weeping as she spoke briefly about the memory of the rapper.
Talking to the camera, a clearly emotional Bella said: "I just wanted to say anybody out there who’s a Lil Peep fan, you guys know how talented he was, you guys know how great he was.
Before all this, Bella was pictured in December 2016 kissing singer Charlie Puth on the beach and they were thought to be an item for a few months.
She was accused of cheating on former boyfriend Tyler Posey after rumours claimed her old romance was still going on when she was with Charlie.
She grew up in Florida where she developed her acting skills before playing Ruthy Spivey in the TV series My Own Worst Enemy.
She also appeared as Hilary/"Larry" in Blended and as Celia in Alexander and the Terrible, Horrible, No Good, Very Bad Day.
Bella had no experience in professional dancing before being cast, but after signing onto the show in October 2009, she began taking three dance classes every night. She has released two extended plays, three singles, one featured single, four promotional singles, and six music videos.
In March 2013, Bella announced she'd been signed to Hollywood Records, and began working on her debut material.
In November 2017 it was revealed she will star in Liam Payne's video for racy track Bedroom Floor as his love interest - which may rile his girlfriend Cheryl Tweedy.
Bella made headlines in May 2017 when she was pictures heading to Hollywood hotspot Catch with Kourtney Kardashian's ex Scott Disick.
Months earlier she opened up about her previous problems with online bullying as she received death threats from Internet trolls who thought she had cheated on a former lover.