Bear was confronted by Lillie during a task tonight and, while balancing three doughnuts on his head, she walked through the door in a effort to distract him.
Despite being in a relationship with Lillie when he entered the show, Bear dumped her on TV and sparked up a new romance with fellow contestant Chloe Khan.
But speaking in the Diary Room, he was tonight seen crying.
He tearfully explained: "In the long run, she would've got hurt a lot more. I had to break away from her, it's the hardest thing I had to do. I would've married her.
"I think about her every day but I can't be with her. It's not fair on her. I was adamant I wouldn't get with anyone else. I knew her for two and a half months, everything happens for a reason..."
Bear added: "Maybe it's her lucky escape from me. God knows what she's gone through.
"It took me 26 years to find someone I care about. Maybe I'll find my next girlfriend in the next 26 years."
Lillie entered the house as a 'distraction' while Bear, Renee Graziano and Sam Fox all stood with three doughnuts on their heads.
She tearfully told him: "This is the hardest thing I've ever had to do, I just needed to see you… it's so surreal… I'm having to watch this from home. You had me with you until the car came to collect you; you left me with your family. You asked me to be there when you got home, I was supporting you 100 per cent. The embarrassment and humiliation I've had… this is all one big game to you, it is a joke at my expense."
Following her appearance, the CBB housemates all rallied round and hugged her, while Bear silently stared at the floor.
CBB continues at 9pm on Channel 5.
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