[header] How to know whether you're compatible [title] Play the well known " favorites " game. [step] 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. 
[title] Talk about what kind of pets you two like. [step] If you have totally different tastes in pets, this can make eventually settling down with this person a bit more difficult and maybe unpleasant.