Gaz had asked Marnie: "Who would you rather shag? Aaron or Lewis?" And not phased by the question, Marnie hit back: "Lewis, obviously."
She then turned the tables on Gaz and asked him: "Who would you rather sleep with Charlotte [Crosby] or Emma [McVey]?"
Emma is Gaz's current girlfriend, while Charlotte is obviously his ex.
Taking part in a Facebook Live with The Sun, Gaz laughed and Sophie Kasaei then suggested: "What about Snog, Marry, Avoid? Lillie [Lexie Gregg], Emma or Charlotte?"
Gaz told her to "f**k off," but he did answer - not before Sophie and Marnie had their say. Sophie thought Gaz would marry Charlotte, kiss Emma and avoid Lillie, while Marnie suggested Gaz would marry Lillie, kiss Charlotte and avoid Emma.
Turns out they were both wrong, Gaz said: "I would marry Emma, snog Charlotte and avoid Lillie."
Gaz had dated Lilllie for almost two years, before splitting with her in November last year. Fans saw the pair reunite on Ex On The Beach's fifth series and Gaz revealed he had ended his relationship with Lillie as he had to choose between her and his career on Geordie Shore.
It later came out that he had also cheated on her twice, but he and Lillie managed to clear the air and Lillie has said she and Gaz are now in a "really good place" with each other.
On Geordie Shore, however, Gaz confessed to Charlotte that he partly split with Lillie because of their relationship. They had been on/off romantically for the last five years and appeared to finally give things a go during Geordie Shore's Big Birthday Battle series.
Following filming, Charlotte and Gaz tried to work out if they had a future together, but they never put a label on their relationship. It ended up breaking down when Gaz went off to film for Ex On The Beach, and he and Charlotte publicly fell out, prompting her to quit Geordie Shore.
Gaz is now dating Mario Falcone's ex and model Emma McVey. They first went public with their romance in September, and speaking exclusively to Reveal, Gaz has now confirmed they are an official item.
Although, he has said he will be keeping things with Emma fairly private. He said: "I just think some things you can put on social media, but some things keep private. If you're happy, then you're happy. You don't need to let everyone know. It's going good and we're taking our time. At the minute, it's working."
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