Jordan and Hailey's marriage was to temporarily hold off the other secret families from killing them. Meanwhile, Jordan would hide his true strength and bide his time. He would use his prediction ability to regain power and develop more advanced technologies and weapons than the other families!
In order to not let the other families ruin his plans, he had to pretend to obey and be resigned to his fate. This way, they would lower their guard against him!
As for whether Hailey had turned over a new leaf, Jordan did not care at all.
Of course, after the two of them got married, Hailey would be Jordan's wife in name. He would never allow her to mess around with other men and affect his reputation.
Men cared a lot about their reputations.