Proving their critics wrong, the reality couple's romance has been hotting up in the outside world and they've just marked a new milestone: meeting the parents!
Marnie wrote in her Star magazine column: "Things with Lewis have been amazing. I met his family at the weekend! I was nervous but they felt they already knew me because they'd watched me on TV."
Fans of CBB became quite familiar with Lewis' beloved mum Claire during the summer series, as she popped into the house as part of a task and appeared on Bit On The Side.
She'd already told Lewis she was happy for him and Marnie, adding during the shopping task: "Say hello to Marnie for me. She's gorgeous. Tell her she's beautiful and she needs to know that."
Claire had also said Marnie was welcome at the Bloor house any time!
Marnie added in her magazine column that she and Lewis had deliberately been keeping their romance under wraps since leaving the house.
"For people saying we're a showmance, that's ridiculous," she said. "Since we came out we've kept everything private. I'm not putting any pressure on us – I've made that mistake before. We're really happy and I feel safe and confident.
"I've never met anyone like Lewis before."
As well as meeting the family, Geordie Shore star Marnie has been getting to know Lewis' friends as well, attending a family wedding with him over the weekend where she hung out with TOWIE's James 'Arg' Argent.
Sadly for anyone hoping to see Lewnie appear together on TV again, that seems pretty unlikely right now: Lewis left TOWIE last year and has ruled out ever joining Marnie on Geordie Shore.