Paul, 22, appeared to propose to Mongeau during her 21st birthday party Sunday.
{"preview_thumbnail":"https://cdn.flowplayer.com/6684a05f-6468-4ecd-87d5-a748773282a3/i/v-i-8…","video_id":"85404726-3937-477c-9fc6-987f31410d3f","player_id":"8ca46225-42a2-4245-9c20-7850ae937431","provider":"flowplayer","video":"Top 5 Times Arab Divas Sang in English, French, and Spanish!"}
Mongeau shared videos Monday on Instagram Stories from her celebration at a nightclub.
One clip showed a cake reading "Will you marry me, Tana?" Another featured Mongeau showing off her engagement ring.
"i'm engaged @jakepaul," she captioned the post, adding a heart-eyes emoji. Mongeau also announced the news Monday on Twitter.
"JAKE JUST PROPOSED," she wrote. "i'm....... engaged.................."
Mongeau denied the engagement was a joke in a tweet to actress Ashley Liao. "It's not. I'm engaged," she wrote.
Paul had presented Mongeau with her birthday gift, a $124,000 Mercedes-Benz G-Wagen, earlier Sunday.
Mongeau showed off the car in a pair of photos with Paul on Instagram. "never give up on your dreams, kids. THANK U BABY," she captioned the post.
Paul and Mongeau sparked dating rumors in May following Mongeau's split from actress Bella Thorne.
Thorne confirmed her split from Mongeau in February after a year of dating.
"Tana and I aren't together anymore, pls stop asking," Thorne tweeted. "We love U guys."
Paul is the brother of YouTube star Logan Paul and has over 19 million subscribers on YouTube.
Mongeau boasts 4.5 million YouTube subscribers.
