Peter,

There is always a chance that two people might not like each other, but in my experience as a captain, all of the pilots I worked with were very professional in their cockpit duties. Sure, there were some pilots I related to better than others, but all of us had the same goal in mind. Get the job done.  

One of the best quotes of a salty old captain I used to fly with is: "Don't make a fun job hard."

Lou