On Tuesday, the actress' actual birthday, Mongeau shared a photo on Twitter showing her and Thorne sitting side by side on a jet together. The Youtuber made a funny face while holding a camera as Thorne cracked a smile as she held up some food in a plastic container. There's also a big bouquet of flowers in the actress' lap.
"@bellathorne 🦋 grateful to be spending a third birthday of yours with u," Mongeau captioned the image. "as always, thank u for changing my life u f**king mogul 🖤."
In Mongeau's Instagram Story, she also shared clips from Thorne's birthday celebration at Six Flags, which included one of the actress surrounded by friends on a party bus and another of Thorne attempting to blow out candles on a cake.
"she just lit a joint on these candles before this @bellathorne," Mongeau wrote alongside the aforementioned clip. Thorne claimed, in her own Instagram Story, that she had the amusement park shut down for her big day.
Meanwhile, Thorne has found a new boyfriend, Benjamin Mascolo, an Italian singer. And on Monday, she introduced the world to a new girlfriend. The actress posted a pair of photos of her and the mystery girl partially clothed and in bed together. The new woman in Thorne's life made sure her face was covered. The actress captioned the post: "She's very cute ✨💫 first girl I have dated that's camera shy 😂."