whats the relationship between marie and emil?

There is a growing flirtatious relationship between Emil and Marie, which Carl notices. Lou and Oscar suspect that Carl wants to marry Alexandra, and are resentful that they had to work hard for their farms, but he thinks he can marry into a farm. After this, Alexandra and her brothers are no longer speaking. Then Carl, recognizing a problem, decides to leave for Alaska. At the same time, Emil announces he is leaving for a job in Mexico City. Alexandra is left alone.

This flirtation with Emil causes problems because Marie is already married to Frank. This of course spells disaster in the end.