Most people are familiar with the concept of a crush. Those fluttery stomach feels that happen when you find yourself sexually and/or romantically attracted to another person. A squish is also a form of attraction, which may very well involve butterflies and intense feelings but isn’t sexual or romantic in nature.
People who identify as asexual sometimes use the word squish to describe their desire for other people; however people of any sexual identification may experience the feeling. I have a squish on many of you. Prrrrow!