Okay, so remember when we talked about how sometimes grown-ups fall in love and want to be together forever, like mommy and daddy? Well, sometimes two grown-ups of the same gender fall in love and want to be together forever too, just like mommy and daddy.
In some places in Europe, the government says it's okay for two people of the same gender to be together forever in something called a marriage. That means they get special legal rights and can do things together like buy a house or make decisions for each other if one of them gets sick.
But in other places in Europe, the government doesn't think it's okay for two people of the same gender to be in a marriage. So instead, they have something called a civil union or partnership. This is like a marriage, but it doesn't have all the same legal rights.
Some countries in Europe have had civil unions or partnerships for a long time, but others have only recently started allowing them. And still, some places in Europe don't recognize partnerships or marriages for same-gender couples at all.
It's important for everyone to be treated equally and have the same opportunities in life, no matter who they love. That's why some people are working to make sure that same-gender couples can have the same rights as opposite-gender couples no matter where they live in Europe.