I was under the impression that the divorce rates were dropping over time... and I think it's generally due to less people feeling pressured to get married early.
Yeah, I definitely don't fault people for changing partners a lot, lots of people are very good at hiding their true selves for weeks, months or years and that's super not cool. I do feel like this is another area (like personal finances, etc) that we could really use better education on. If kids learnt how to resolve conflict, defuse tense situations and work on their relationships in school, I imagine the societal effects within a decade or two would be incredible.
I'm not really sure I suppose, all I know is what (for me and my partner) constituents good practices in respect of communication and other behaviours within our relationship and that treating each other respectfully and all the other aspects of what we feel a good relationship requires seems to work; people are free to choose their life, and they do, and the choices each make will ultimately deliver a result.
As for what kids learn in school, who knows...I suppose whatever agenda the government feel us appropriate at the time.