The conversation began when Rachel suggested to David that she and Keeley might be a target in nominations this week, with David claiming that he knew one other person that would certainly be nominated instead.
After realising that he meant Caoimhe, Keeley agreed with David's belief that she was a negative influence on the house.
"The last few days I'm seeing this negative, almost destructive thing," David said of Caoimhe. "She'll bring the whole house down and enjoy it."
He later told Ben: "I've tried to be friends with her, but I just don't like what I see."
Ben agreed with David's view despite being close friends with Caoimhe himself ever since Shabby walked from the house.
"What I resented last night was Caoimhe coming in and taking his side about it," Ben told David referring to argument between himself and John James yesterday evening. "It's her having a go at me for not having team spirit... Have you seen her for the past few weeks!"
The two agreed that she was not a good influence on everyone at the minute and thanked both Rachel and Keeley for bringing some fun back into the house.