Last night (4 August), viewers watched as Bear opened up about his romance with Lillie. He told Samantha Fox that he was 'seeing someone on the outside', but after being in the CBB house, he has realised she is 'not the one.'
Bear was then seen kissing former X Factor star Chloe Khan.
Lillie simply posted a broken heart emoji to Twitter.
She also liked a tweet from a fan that read: "Really feel for @LillieGregg tonight #cbb," And another that said: "@LillieGregg ur a beautiful young successful women u will Find the right man when u least expect it head up Hun (sic)."
In a conversation with Sam, Bear told her how he was struggling to stay loyal to his romance with Lillie. He admitted that being around Chloe had led him to question his relationship, and told Sam it was "hard" to refrain from pursuing Chloe.
Sam advised him 'not to upset' Lillie, but later that evening, viewers saw Bear snog Chloe several times. He first kissed his housemate as part of a dare. Bear and Chloe had been playing a drinking game together, counting to the number 21. Whoever said 21 had to do a dare, and Bear dared Chloe to kiss him for 10 seconds.
The duo were then seen locking lips again in the bathroom, where Bear told Chloe that he 'loved' kissing her.
Their kiss didn't go unnoticed and caused a stir among the rest of the house. Renee Graziano told the pair it had been 'disrespectful', and Heavy D (who has openly said he likes Chloe) told Big Brother he can no longer trust anyone.
Bear, meanwhile, didn't think he had done anything wrong and claimed he was 'only kissing the girl he fancies.'
Prior to heading in the house, Bear had been dating Lillie.
They met while filming Ex On The Beach's fifth series back in April, and went public with their romance a month later. They kept fans updated with plenty of smitten selfies and Snapchats, and everyone had presumed the pair were an official item.
However, Lillie recently revealed that she and Bear are 'seeing each other' and haven't yet put a label on their relationship. She said it was "early days" between the pair, and she supported Bear's decision to head into the CBB house.
Bear had told her before making his CBB debut that he had 'wanted to make it work' between them. Lillie told The Sun: "We had a chat before he went in. He wants to be with me, he wants to make it work and I was just very much like, 'Well, obviously it's a massive opportunity, go and enjoy yourself and if it's meant to be it'll be.'
"Let's just hope he can keep his hands to himself [or] I won't be there on eviction night!"
Before kissing Chloe, Bear had previously told Renee that he 'wouldn't be kissing any one' while in the house. Although, fans had questioned his loyalty to Lillie when Bear claimed 'if he wanted to to, he could kiss Marnie Simpson.'
Bear later explained that his comments had been hypothetical, but fans asked: "Does Bear not remember who Lillie Gregg is?"
He had briefly kissed Marnie as part of a task.
Last night, Bear was given a formal warning by Big Brother after throwing a mug and smashing a mirror in the house. He had fallen out with Heavy and security had to intervene when Bear threatened to 'turn over' the house while locked in the Diary Room.
He was forced to sleep in a separate room to his housemates.
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