Cheska was seen on Monday night's episode revealing to Binky that she'd heard Alex had slept with a girl behind her back in Oxford. Once confronted, Alex was unable to deny the claim.
Recalling the moment in spin-off online showMad On Chelsea, Cheska has admitted: "It was a tricky episode having to tell you best friend some bad news, especially about her boyfriend."
She added: "It's not something many girls would want to do." Definitely not, Cheska!
Cheska filmed the 13-minute spin-off with her co-star and good friend Stevie Johnson - and it was suggested that they should date each other!
A fan had tweeted to ask why Cheska and Stevie (who have dubbed themselves Chevie) weren't in a relationship, and the pair went a little red-faced.
Cheska replied: "I just think we're such good friends, I think it would be weird…" Stevie said: "Oh, she's turned me down. Friends only, gang."
It was then suggested by another follower that Cheska and Stevie should have a baby!
Laughing, Cheska said: "Oh my God! It would have great hair and would look a little bit like Princess Diana, because I get that a lot and you get that a lot as well. Or Prince Charming from Shrek."