Episodes airing in Australia next week see Romeo and Indi (Samara Weaving) finally decide to work through their issues by giving their marriage another try.
However, Mitchell told TV Week that the pair must have some serious discussions over what went wrong between them in the first place.
He commented: "They agree to wipe the slate clean and start afresh. I think they're both unsure about how to navigate their new relationship, and they're both so nervous.
"They have a lot of rebuilding to do before their relationship can go back to the way it was. If they're to make it work, they need to identify what went wrong so it doesn't happen again."
After some initial awkwardness, the couple kick off their new chapter by heading to a place which holds special memories for them.
Mitchell confirmed: "He takes her to where it all began - their first kiss."
Home and Away airs weekdays at 7pm on Network Seven in Australia, and weekdays at 1.15pm and 6pm on Channel 5 in the UK.