S41·E87 Episode 6210 (Thu 12th Apr 2012) (Part 1)

Cameron thinks that Chas and Luke spent the night together and is distracted at the surgery as Debbie has her midwife appointment. It's all too real for Cameron when they discover that Debbie's having a boy. However, Chas tells Charity that she actually sent Luke home. Cameron can barely hide his smile when he discovers that Chas didn't sleep with Luke, but is jealous when Luke reappears and approaches Chas.