People married or plan on doing so, made up your mind on the last name?

So who's taking who's last name, or who took whos last name? I'm sure the last names should be known to make the decision but I feel like people make up their decisions early sometimes.

If you aren't sure, how do you think it's gonna go down, when it comes to the last name?

Apparently according to someone online you can actually mix both to make a new last name, I don't know if that's true but I guess it's an option.
People married or plan on doing so, made up your mind on the last name?
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