Okay, this is a piece of my mind, since i’ve experience it first hand. Married is difficult, period, whether you like it or not, everyone have their own issues, so don’t expect when you see some picture perfect couple, then they dont have any problem. People change over time, it can be for the better or worse. If the balance with both people not the same, on long term their relationship will irretrievably broken. I think one relationship have their own “age” if that make sense. I believe people will fell out of love with each other over time. What’s left is just “consideration” with each other. It could be exhausting some time. But the relationship will change from romantic to family.