It's bad to be in a loveless marriage.
Celia's idea to Adam is they could get married so Adam becomes a citizen and Celia could afford a better lifestyle.
Celia wants to decide if she should continue with her plan.
Celia realizes she would end up trapped in a loveless marriage.
Celia and Adam get married just like her original plans.
Celia and Adam decide not to get married after all.
Since they aren't actually in love their marriage isn't the greatest or the funnest.