Alan, who plays the beloved doctor, has found his character stuck in the middle of a classic Neighbours love triangle.
Susan (Jackie Woodburne) has found her husband distracted by the arrival of home wrecker Izzy (Natalie Bassingthwaighte) and her cunning plan.
The blonde bombshell has been luring Karl with millions of dollars for the creation of a new hospital wing in his name.
Nothing comes for free with Izzy as she will only splash the cash if Karl gives her a baby.
Now it seems the beloved couple could be in trouble for good after Izzy’s whirlwind visit.
Speaking exclusively to Express.co.uk, 60-year-old Alan hinted they could split up following the drama.
When asked what fans can expect from Karl and Susan in the coming weeks, Alan teased: “The Kennedy house goes through an earthquake that damages the foundations of the house and we’re looking at now ether the house will fall down.”
What’s more, the soapstar confessed the best is yet to come in the dramatic tale.
He hinted: “My favourite scene is right at the end and I won’t give it away, but the resolution on this story is a big kick in the guts.
“Well, it’s a kick in the guts for Karl in a way because ultimately Izzy will always let him down.
“It’s given us a new story but I can’t tell you definitively if there’s a resolution for Karl and Susan.”
The latest comes after a huge baby bombshell will be dropped on the Kennedys.
At Susan’s birthday party, a mix ups in bags leaves a mystery positive pregnancy test out in the open.
However, after some heated discussion between all possible parties, it transpires it’s Mishti Sharma (Scarlett Vas) who is expecting.
But with Leo Tanaka (Tim Kano) and Mishti’s relationship fairly new and fresh, will they choose to keep the baby?
Neighbours airs weekdays on Channel 5 at 1.45pm and is repeated at 5.30pm.