Ramsay Street cast member Ben Barber has revealed that his alter ego will pop the question after he helps her through her birth.
"Vanessa has the baby in her arms and Rhys tells her that he loves her and then asks her to marry him," Barber told TV Week.
When asked how Vanessa will answer, the actor challenged fans: "If you know both characters, I think you'll have an idea of how it's going to play out - but then you might be surprised, too."
The baby's dad Lucas is away and cannot be contacted when Vanessa's waters break.
Barber elaborated on the situation: "Leading up to the birth, [Rhys has] been trying to win her over, but everything seems to come out the wrong way.
"She doesn't want his help, but he's not leaving with Lucas nowhere in sight!"
Neighbours fans in Australia will see the storyline play out next week, while the drama will hit UK screens early next year.