Lizzie continued to explain why she kept him private for so long - and it had everything to do with her past.
"Yes I know some of you are probably excited to see my partners face. The thing is, a lot of you know me from reality tv, but it was tv, definitely some truths to it, 100% there are some truths. But it is also entertainment," she shared.
Lastly, she wanted fans to know why now was the right time for them to come out.
"As a whole, I'm incredibly private, I did reality tv a lifetime ago. I'm so protective over my partner and there are so many negative, gossiping people out there, that go out of their way to talk trash. I have never felt a love like this so hopefully people can see why I have been so protective.
"I don't need to justify myself, I get it. We have been together for a quite a while but I was letting myself enjoy it. Without others knowing on a bigger platform. ❤️," she concluded.
Lizzie's Instagram was flooded with messages celebrating her big reveal.
MAFS alum Sarah Roza commented, "Cuties! 💞," and a fan wrote, "Aww super cute .glad to see you happy ❤️❤️❤️❤️."
"So cute 😍 I'm glad you found the happiness you deserve. Nothing but positive vibes. Keep on being you ❤️," said another.
She first shared a glimpse of her boyfriend on Instagram in December.
In the photos, the season six and seven bride shared a kiss with her boyfriend, who had "been around for a while", but she covered his face with an emoji.
"Life things 🥰," she simply captioned the post.
MAFS fans first met Lizzie in 2019 when she was partnered with Sam Ball, who infamously had an affair with co-star Ines Basic.
A year later, she returned for a second shot at love and became an intruder couple with Seb Guilhaus, but they split in January 2021.
Seb has also moved on with his girlfriend Ania and earlier this month announced that the two will be joining OnlyFans.
This article was originally published on our sister site Now To Love.