Sentence:  "Ryan Bingham": I thought I was a part of your life. "Alex Goran": I thought we signed up for the same thing... I thought our relationship was perfectly clear. You are an escape. You're a break from our normal lives. You're a <WSD>parenthesis</WSD>. "Ryan Bingham": I'm a parenthesis? 
Meaning of the word marked with <WSD> tags:  A digression; the use of such digressions.