To MC welfare centers, that support orphans, is something close to him since he was an orphan but was raised to be an assassin. So he sees selling his body trivial compared to ensuring kids won't have to go through the same thing he did.
So instead of talking about their problems, they just break up, but because they broke up they find it easier to talk out their problems then get back again...
Solution?
talk out their problems don't date but date
er this is very late but, their plan was to use their marriage as the reason why they decided to make the ID so late. But she is too young to get married so they are just waiting till she reaches the legal age of 20