Quote from Chandler in The One at the Beach
Chandler: I know I've asked you this before. Monica: A hundred times before! [taking the knife away from Monica as she chops vegetables] Chandler: How am I not right for you? Monica: I don't know. I like guys like Richard. Or Pete, before he went insane. I don't know. Just somebody more mature. Chandler: [in a silly voice] Oh, so I'm not mature enough for you? Monica needs somebody more mature.