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How to know whether you're compatible
Play the well known " favorites " game.
You each take turns asking the other about random things like " favorite books ", " favorite movies ", et cetera. This isn't the most important thing to know, but it helps a couple connect.
Talk about what kind of pets you two like. If you have totally different tastes in pets, this can make eventually settling down with this person a bit more difficult and maybe unpleasant.