Zosia (Camilla Arfwedson) and Ollie (James Anderson) have been quietly enjoying their new relationship, as fans of the BBC One hospital drama will already know.
But, as always is the case in Holby City, the cute couple are about to find themselves hit with a MAMMOTH bombshell in next week’s episode.
It all begins when Zosia asks for a key to her new boyfriend’s flat, only to have him freak out. She immediately fears that he’s a commitment-phobe and that their new relationship is not as serious as she first believed.
However things go from bad to worse when pregnant Melissa arrives at the hospital for a procedure on her unborn child.
Ollie is stunned to realise that he already knows the patient; in fact, he’s slept with her and might just be the father of her baby.
Yikes!
Unsurprisingly, Ollie does everything he can to hide the fact from his girlfriend, but it’s not long before Melissa accidentally-on-purpose lets slip to Zosia that Ollie is the father of her unborn baby.
Zosia is left heartbroken and they are both left wondering what Ollie's impending fatherhood will mean for their relationship.
Can he do right by both women - or will he lose Zosia in the process?
And, more importantly, is Melissa telling the whole truth?
Elsewhere, Bernie (Jemma Redgrave) is left stunned when Lorna Wallace, who's due to undergo a bi-lateral mastectomy after testing positive for the BRCA1 cancer gene, makes a formal complaint against her.
And will Cara (Niamh Walsh), who is desperate for a new housemate, agree to let colleague Morven (Eleanor Fanyinka) move in with her?
Holby City airs at 8pm on Tuesday 15th March