How do you know if you're compatible with someone you're dating?

A survey of 2,000 Americans found that most people value the idea of being "compatible" with someone when choosing a partner (89%), with 68% believing that someone who is "compatible" is similar to them. Conducted by OnePoll on behalf of Hily, the survey revealed people have a good idea of what they're looking for in a partner by age 25. And 65% believe finding someone compatible is less stressful as they age.