The reality stars have been kissing up a storm and growing increasingly close in the house but Lewis has said nothing is official and Marnie is a free agent.
In scenes to air on Wednesday night (3 August), the TOWIE star is asked by Saira Khan if he's worried what will happen with Marnie when they're separated into two groups as part of a new task.
"Of course not!" he replies. "If she wants to get with anyone else in there she can."
Does that mean Bear has a chance?
Even though he's been dating fellow Ex On The Beach star Lillie Lexie Gregg on the outside, Bear declared on last night's episode he could kiss Marnie if he wanted to, even when Lewis told him he quite liked Marnie.
"I don't give a f**k," replied Bear. "It's nothing personal... it's me. There's no dibs in here mate... I'll do what I f**king want."
Marnie ended up intervening to tell Bear he'd been disrespectful towards Lewis, who is meant to be his friend, but Bear stood his ground and told her: "So if I say I want to kiss you, I'll kiss you. If I want to kiss someone else, I would. No one has got boyfriends or girlfriends here...
"I'm saying if I wanted to, I would. If I wanted to. Not saying you would back, but if I wanted to do something I would. That's all I'm saying."
Bear later reiterated that to Lewis, telling him: "I'm saying if I want to kiss that person, I would - not saying that I would do it. I'm not saying I would try to, but if I want to do something I will do it because no one has a boyfriend or girlfriend in here."
CBB continues 9pm on Channel 5.