The pair shared a cheeky snog in the house this week and it was enough to leave Marnie falling for Kieran.
After leaving the house last night, 'VIP guest' of this year's series Marnie told Emma Willis of Kieran: “He’s sexy isn’t he. I’ll slide him a DM!”
She went on to tell Big Brother's Bit On The Side: “I've already followed him! First thing I did. I followed him on Twitter.
And discussing their kiss, Marnie continued: "It was amazing. I said it was like I kissed an Angel.
“He is the nicest boy I've ever met in me life,” she continued. “He's just so sweet and he was very shy. I found it... I found it... It was different to what I'm used to and I just really liked him."
In the house, Marnie had told the housemates after her kiss with Kieran: "I'm already planning my wedding.
"He's the guy I should go for. I usually date guys who are cocky, forward and they'll just grab you but they're the worst type of boy.
"It's the best kiss I've had all year. Better kiss than Lewis [Bloor]. 100%. I want to do it again."
Marnie kissed Kieran despite previously saying she wouldn't approach him because of his connection to fellow housemate Rebecca Jane.
"I'd snog him but I feel that girl's [Rebecca] really hung up on him and I couldn't do that," Marnie had previously told Big Brother in the Diary Room.
Big Brother 2017 continues nightly on Channel 5 with the latest episode tonight at 9PM.