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'Max is a really nice guy. He's easy to talk to': Christina gushed to Big Brother in the diary room.
'And really nice looking?' Big Brother asked.
Getting closer: A montage of footage showed Max (left) and Christina (right) flirting by the pool
Food for thought: The pair were also seen playfully throwing food into each other's mouths in the kitchen
Christina blushed and giggled, replying: 'Yeah, OK'.
Katie was seething with jealousy as she watched her former lover cosy up to the stunning brunette flight attendant.
Katie, who dated Max eight years ago, told Big Brother: 'The dynamic with Max and I is really off at the moment, and I think it's a little weird to have this... flirtatious relationship that he is creating with Christina.'