Is it important to find a partner with the same smile?

This is important because having the same laughter helps two people communicate more smoothly. Imagine that when you meet an interesting thing and want to share it with others urgently, if your other half shares your laughter, then she will understand what you are saying, otherwise, if you cover your face and look at her, you will lose the fun of sharing.

It doesn't matter, because two people can cultivate the same laughter. For example, when you watch a comedy together, you all laugh happily, so when you encounter similar things or jokes, she will understand in an instant.