The tentatively-titled series will follow the couple as O'Connell attempts to convince Brice to move back in with him but she pushes for a wedding proposal first, according to Oxygen.
O'Connell selected Brice during The Bachelor's final seventh-season Rose Ceremony in 2005, however instead of proposing he presented her with a promise ring so the couple could attempt to have a relationship in the real world.
After they reunited, Brice attributed the split to O'Connell's excessive drinking and her desire to be more independent. During February's The Bachelor: The Women Tell All special, O'Connell claimed he hadn't "had a drink in almost two years or something like that," and Brice added his drinking had been "99% of the problem" in their relationship.
"We're working on our relationship, and there may be an engagement in the future, and there could be a family," said O'Connell at the time. "That's were we stand. We stand with hoping to have the future together."
When Charlie Met Sarah is being produced by Nancy Glass Productions.