Who is Avi Lang? My Big Fat Fabulous Life star Whitney Thore thought she found the man of her dreams and she was this close to walking down the aisle — but it turns out that her new mystery man is extremely shady! Keep scrolling below to find out more about Whitney’s boyfriend!

Avi and Whitney met online.

Fans were introduced to Avi during the Season 5 premiere of My Big Fat Fabulous Life and fans were shocked when they found out that Whitney was thinking about converting to Judaism in order to marry Avi. Although it seemed like Whitney had only been seeing him for a short amount of time on the show, she took to Instagram to explain their relationship history.

View this post on Instagram

🍵🍵🍵Thanks for watching the premiere with me! Next week is going to be much harder once you meet Avi (and by the way, it is NOT Avi Kaplan from Pentatonix 😂). . Since my friends & fam ROASTED me about Avi, I present to you my first interaction with him (don’t bother looking him up; he disabled this account). Peep the date…September 11, 2016. And keep scrolling to see him at the dance battle, blurred, because he never wanted to be on TV. I dated Avi for MANY months before any of this that you saw tonight happened. I didn’t think about converting to Judaism overnight. I don’t want anyone to think I approached my relationship with Avi (or that decision specifically) flippantly. . Join us next week, Tuesday at 8/7c for two more hours of #MyBigFatFabLife & I’ll keep serving up that 🍵, #Aviously

A post shared by Whitney Way Thore⚡️ (@whitneywaythore) on

“Since my friends [and] fam [sic] ROASTED me about Avi, I present to you my first interaction with him (don’t bother looking him up; he disabled this account),” she wrote in the caption of her post, which included a screenshot of his first message to her and a photo of him with his face blurred out.

“Peep the date…September 11, 2016. And keep scrolling to see him at the dance battle, blurred, because he never wanted to be on TV,” she continued. “I dated Avi for MANY months before any of this that you saw tonight happened. I didn’t think about converting to Judaism overnight. I don’t want anyone to think I approached my relationship with Avi (or that decision specifically) flippantly.”

He never wanted her to share photos of them on social media.

Even though that should have been a major red flag from the start, Avi had a pretty solid excuse for not wanting to be Instagram official with Whitney. He told her that he didn’t want any of his co-workers to find out that he was dating a non-Jewish woman, and Whitney respected that.

But turns out, he was engaged to another woman the entire time he was dating Whitney.

In a clip from tonight’s episode, Whitney got an extremely troubling message from a woman named Nada, who revealed that she was Avi’s fiancée. Later in the episode, Whitney asks her best friend Tal for relationship advice. Watch the video below to see a sneak peek!

Be sure to catch the next episode of My Big Fat Fabulous Life, airing Tuesdays at 8 p.m. on TLC.