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"Stana Katic has described the chemistry between Kate Beckett and Richard Castle on Castle as &amp;quot;smart&amp;quot;.  The actress praised the relationship between her onscreen character Beckett and Castle (Nathan Fillion), saying that it is &amp;quot;beautiful&amp;quot; to see two people who are willing to do anything for one another and who &amp;quot;challenge&amp;quot; each other to be better. &amp;quot;I think it&amp;#039;s a smart chemistry. Both of them are crazy about each other and they&amp;#039;re also capable of giving each other a hard time and challenging each other to be the better version of the person that they are,&amp;quot; Katic told Parade. &amp;quot;I think it&amp;#039;s a beautiful relationship. She is a smart woman that [almost] any guy with a set of brain cells would like to be with.&amp;quot; Katic was also insistent that having the characters become involved in a romantic relationship would not necessarily mean the death of the show.  &amp;quot;I enjoy The Thin Man series, which is an older series where the main characters got together and you watched them go through the cycles that all couples have, while solving crimes. I think that could add so much more flavour to the experience,&amp;quot; she explained. &amp;quot;Maybe I&amp;#039;m na\u00EFvely romantic, but I do believe that spice and excitement doesn&amp;#039;t stop once a couple gets together. There are new obstacles and issues to deal with and those are equally exciting to watch and be a part of.&amp;quot; &amp;gt; &amp;#039;Castle&amp;#039; star Stana Katic: &amp;#039;You&amp;#039;ll see a different Beckett&amp;#039; &amp;gt; Nathan Fillion: &amp;#039;Castle&amp;#039;s used to getting his own way Castle airs on Mondays at 10/9c on ABC. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/tv/ustv/news/a352188/castle-stana-katic-kate-castle-have-smart-chemistry/>